Diana Plazas is the Director of Online Marketing for DoubleTree by Hilton Hotels at Hilton Worldwide. Diana has been in this role since 2009 and previous to that she managed search engine marketing for the Hilton portfolio of brands since the Summer of 2006, working on both organic and paid search initiatives for the Americas. At Doubletree, she leads the brand's online strategy, working closely with the internal teams and agencies on search, display, website management and social media. Diana brings with her over 9 years of experience in search, and prior to joining Hilton, she led the search and online marketing efforts at PlasticSurgery.com.

Philip oversees the development of LivingSocial's national brand partnerships and strategy in the UK and Ireland. Philip previously held several senior Business Development roles in the UK and Internationally at TradingPartners. He has a degree from the University of Birmingham.

As Senior Marketing and Community Manager at Salesforce Radian6, the industry-leading social media‐monitoring platform, used by more than half of the FORTUNE 100 companies, Madlen leads all Social Media and Marketing programs and strategies in EMEA (Europe,Middle East and Africa). She drives the development of local Content Marketing Strategies and the company’s efforts to engage with, inform and learn from Radian6’s customers and communities in the region.

Madlen brings with her more than seven years of Social Media, PR and Marketing experience in corporate and agency environments. Prior to joining Salesforce, Madlen was Kodak’s SocialMedia Manager in EMEA, where she developed compelling and innovative social media and online marketing programs that activated the Kodak brand and enabled customer engagement for all Business‐to‐Business (B2B) and Business‐to‐Consumer (B2C) sectors.

In the last three years Madlen has been a speaker at over 40 international digital conferences including Re:publica, LeWeb10, M2C, Figaro Digital, Kommunikationskongress and The World afterAdvertising.

Madlen is a regular writer for the Radian6 blogs and has been a contributor to several books, including “The Social Media MBA – Your Competitive Edge In Social Media Strategy Development and Delivery” by Christer Holloman, and “Social Media in der Unternehmenskommunikation” (GERMAN) by Lars Dörfel and Theresa Schulz. Madlen grew up in Saxony, Germany and has a Diploma in Media Management.

Simon Nicholson is the Social Media manager for Honda in Europe, where he is responsible for social media strategy and structure in the region. Now at Honda for approaching one year, it is his ambition to continue to develop and innovate Honda's social media activities in the region, working across product divisions and departments. Before joining Honda Motor Europe Simon has had digital and social roles at Microsoft and SDL.

Tamsin Fox-Davies is a well known small business marketing mentor with more than ten years’ experience in delivering training and advice to SMBs in the UK and Europe.

Tamsin joined the Constant Contact team in 2012 as a development manager, and advises UK SMBs on practical ways to achieve real business results from online marketing.

In addition, she is the founder of The Entrepreneurs' Finishing School and the inventor of the Sticky Note Marketing System. Tamsin is an accomplished speaker, blogger and writer, contributing regularly to Women Unlimited, a website that provides advice and education to female entrepreneurs.

Lee-Anne Ragan, President of Rock.Paper.Scissors Inc., has received local, national, and international acclaim for her work as a specialist in communications, teambuilding, evaluation and conflict resolution training. Her lively, engaging workshops have been serving the not-for-profit, community-based, and corporate sectors for more than 20 years. Original, adaptable and ever inspiring as a trainer and teacher, her work has taken her to Africa, Asia, the Arctic, Mexico, from coast to coast in Canada, and to the United States. A proud Canadian, she currently calls Kenya home.

I’m passionate about making a living doing what I love; creating engaging workshops that help people laugh, learn and lead.

Mohamed El Sioufi has over 35 years of experience practicing, advising central and local authorities and teaching at universities in the field of human settlements. Since 1995, he has worked with UN-HABITAT as a Senior Human Settlements Advisor responsible for capacity development and technical cooperation in the Arab States and Africa. Programmes he developed and managed include human settlements design, environmental planning and management, governance, housing policy and projects, slum upgrading, post disaster institutional capacity development, and resource mobilization. He conceived, established and is coordinating the UN-HABITAT Participatory Slum Upgrading Programme (PSUP) which is operating in more than 40 countries in the African, Arab States, Caribbean and Pacific regions. Since January 2012, he is the Coordinator, Housing and Slum Upgrading Branch and the Executive Coordinator of the Global Housing Strategy to the year 2025. The GHS 2025 is an innovative initiative that facilitates sharing of up-to-date case studies and activities as they unfold in the field through social and professional media as well as developing and sharing evidence-based research among practitioners, local and central authorities, civil society and Habitat Agenda Partners to guide national and city housing and slum upgrading strategies in the context of sustainable urban development.

Yasmin is Counsel in the Business and Legal Affairs team for Warner Home Video and Warner Bros. Digital Distribution, which are the homevideo and digital distribution arms of Warner Bros. Entertainment Inc. She handles business affairs and legal issues for the WHV and WBDD affiliate offices in UK and Benelux, as well as in licensee markets across EMEA. This includes acquisitions, licensing, clearances, ecommerce, sales, marketing, antitrust, and coordinating with other WB divisions on diverse matters from anti-piracy to technical operations. A large part of Yasmin's role at Warner Bros. is to work with the marketing teams from the initial concept stage for a promotional activity through to its execution. The strategy for these activities increasingly straddles traditional media, retailer and other third party outlets with social media, own website and other online platforms.

Prior to joining Warner Bros., Yasmin was a solicitor at niche IP and digital media firm Laurence Kaye Solicitors, where she specialised in social media, IP and data protection matters. At Laurence Kaye Solicitors, Yasmin worked mainly with clients in the creative industries, from print and online publishers to software developers and internet start-ups.

Simon Heseltine is the Director in charge of Search Engine Optimization (SEO) at AOL Inc. In this role Simon and his team are responsible for organic search and training across all AOL and Huffington Post Media Group properties, such as Engadget, Huffington Post, Daily Finance, etc. He has also visited the UK office on several occasions to consult and train the AOL-UK teams on SEO best practices.

In his previous position as Director of Search at a Washington D.C. based agency, Simon was responsible for developing and implementing organic search and social media strategies for companies across several industries. He also developed and delivered training programs for clients, including a large U.S. media company, to enable them to best take advantage of the opportunities available to their companies through both organic search and social media.

Simon is a frequent speaker at conferences in the US & UK on topics ranging from SEO to Social Search to Reputation Management. He also teaches SEO at Georgetown University in Washington D.C. as part of their Digital Media Management program.

Simon writes a regular column for SearchEngineWatch.com on a variety of topics within the marketing industry, and has previously written for other industry sites, such as SearchEngineLand.com (for their in-house marketing column).

Simon has a BA (Hons) from the University of Humberside, and a Masters in IT from Virginia Tech.

Ben Harknett is the Director of EU Sales & Client Services at Wildfire, a division of Google. An experienced sales and business development manager, Ben joined Wildfire’s Palo Alto office in March 2010 and was appointed Director of EU Sales & Client Services in July of that year. In October 2010, Ben moved to London to head sales and service in Europe. Since starting the London office, Ben has worked with key clients including Virgin, McCann Worldwide and Pepsi.

Prior to joining Wildfire, Ben was Sales Manager at media monitoring group Meltwater, where he completed 2009 as one of the company’s top ten performers globally. Ben has also worked as an analyst for Element Markets and British Gas Group.

Ben has a Bachelor of Arts degree in Economics and Managerial Studies from Rice University.

David is Head of Social & Digital Engagement focused on strategies, insights, analytics and breakthroughs, connecting social & digital across the company for Africa, Middle East, India and Europe.

He has worked in the Automotive sector for over 20 years with experience across the complete automotive value chain.

As Director of EMEA Marketing at Lithium Technologies, Prelini is responsible for leading the European marketing efforts in one of the most dynamic social communities software companies in the world. With over 16 years marketing experience, Prelini has led marketing initiatives for major blue chip companies such as Lotus Software, IBM, Zurich Financial Services, COLT Telecom and Adobe. Prelini holds a Masters of Science (in marketing) specialising her dissertation research in Customer Experience Management. Joining Lithium in January 2012, Lithium helps companies change and infuse behaviours of engagement with their customers across all interaction points. With over 300 customers globally and 30+ million users, Lithium continues to be the community software platform of choice.

Jennifer has extensive experience in the field of building global online communities and social media strategies working across a number of different industries. Jennifer currently leads the global Community and Social Media team for element14’s design engineering Community that supports ground breaking innovations in the electronics sector such as the #Raspberrypi. Her background and international experience is quite varied having worked for organizations such as Alliance for Conflict Transformation, Right to Play, Amnesty International and now Premier Farnell. She has been based in Canada, US, Ghana, Kenya and UK. She has also worked as a market research consultant to determine the social, economic and environmental constraints on developing humanitarian landmine detection technology. Her previous work with Amnesty International found her establishing online communities for emerging markets in South America, Bangladesh and West & East Africa using a mixture of mobile, email and social network channels.

Jeremy Porter is Director of Unified Communications at Definition 6, a unified marketing agency. Porter helps clients unify the disciplines of content marketing, social media and public relations to improve their brand storytelling, amplify their brand messages and build stronger and more engaged communities. Definition 6 has led award-winning social media programs for dozens of clients, including HBO, Coca-Cola and Facebook.

Jeremy is a communications industry veteran, having developed and implemented content marketing, social media and public relations programs for more than 100 brands, primarily in B2B industry segments. He currently works with clients to enhance and refine their brand, messaging and positioning strategy and execution across earned, owned and paid media.

Prior to joining Definition 6, Porter led the marketing operations for San Francisco-based mFoundry, the largest provider of mobile banking and payments solutions in the U.S., and the company best known for making mobile payments a reality for Starbucks. Porter is on his second tour of duty with Definition 6, having previously served as its director of marketing and working to establish the agency's national brand presence. Before joining Definition 6 the first time, Jeremy was the first VP of Marketing for Appcelerator, a leading mobile application development framework.

Outside of his core duties at Definition 6, Porter is the founder and lead contributor to Journalistics, a well-respected marketing industry blog about public relations, content marketing and social media topics. Porter is a graduate of Utica College of Syracuse University where he studied Public Relations and Journalism and fell in love with the game of lacrosse. You can follow Jeremy at @jeremyporter or @journalistics, or find out more about Definition 6 at: http://www.definition6.com.

Steve is a creative and award-winning marketer offering 16 years experience in digital strategy, product marketing, and experience design. He has contributed to the growth of businesses such as American Airlines, Coca-Cola, Starwood, Sybase, Citibank, Wells Fargo, Visa, Federated Power, IKON and Network Solutions. Steve is currently Managing Director of Appsolve, an Experience Design and Marketing Monetization Agency. His book “Work Free: A guide to navigating and thriving in the New Work Order” with co-author Ja-Nae’ Duane, is due out in the fall of 2012.

Steve has had leadership roles at agencies such as d50 Media and SapientNitro while at Saipent. He was founder and CEO of Slipstream Aviation Software, an online travel marketplace sold in 2008 to JIT Airline Resources. Steve was co-creator and producer of Browncoats: Redemption, a crowdsourced feature-length sequel to Joss Whedon’s sci-fi feature film Serenity which raised $125K for charity.

His hobbies include flying airplanes and landing them successfully, fly fishing in still waters, playing music for those who will listen and taking interesting pictures of anything that will stand still.

Ja-Nae is the VP of Digital Marketing and Strategy at the Revolution Factory. This award winning speaker, strategist, sociologist, creative economist, and author has worked with such clients as the State of Massachusetts, Chartis, Samsonite, Avid, John Hancock and Cold-EEZE. She recently received an IAC award for best legal website, as well as a Web Marketing Association Award for Advocacy Standard of Excellence and Legal Standard of Excellence for her work on Sokolove Law’s Ban Asbestos Now campaign . Ja-Naé is author of “How to Create a Revolution” and “How to Start Your Business with $100” which has captured the media’s attention, appearing in The Associated Press, NPR, The Boston Globe, and Business Week. Specializing in open innovation and social influence, Ja-Nae’s impressive skill set and unwavering commitment to improving the quality of life for the global community garnered her a nomination as one of New England’s Most Innovative Leaders.

Mike Volpe joined HubSpot in early 2007 as the company's fifth employee and currently serves as chief marketing officer. He heads HubSpot's lead generation and branding strategy through inbound marketing, including blogging, search engine optimization, video marketing, and social media. Since Mike joined HubSpot, the company has grown from 10 to 5,000 customers, expanded from 5 to 300 employees, and raised $65 million in venture capital. Under Mike's leadership, HubSpot's marketing has won more than 30 marketing awards and has been featured in over 20 marketing and business books. Mike is a cutting-edge B2B inbound marketer who speaks at numerous conferences, hosts a weekly live marketing video podcast called HubSpot TV, is one of the 100 most popular marketers on Twitter, consistently posts on blog.hubspot.com, and appears as a marketing speaker at industry conferences. He has also guest lectured at Harvard Business School, Babson University, Carnegie Mellon, TCU, Boston University, and MIT Sloan School of Management.

Before HubSpot, Mike worked as the director of marketing operations at SolidWorks Corp., an engineering software company, where he managed all of the company's global lead generation and lead management, advertising, Internet marketing, branding, PR, tradeshows, and events. He transitioned SolidWorks from outbound marketing to inbound marketing by launching multiple blogs, starting podcasting, incorporating social bookmarking into press releases, initiating pay-per-click marketing, performing search engine optimization (SEO), and launching multiple new global websites in a variety of languages.

Prior to SolidWorks, Mike held marketing and business development positions at enterprise software and consumer Internet startup companies in the San Francisco Bay Area, and he also worked as a financial analyst at a technology industry investment bank.

Mike is an MBA graduate of the MIT Sloan School of Management and received his B.A. in Economics and Government, summa cum laude, from Bowdoin College. He is a former director of the alumni fund at Bowdoin College and a co-founder and former director of the Boston Scholars Program, a Boston volunteer organization. At MIT, Mike won the Patrick McGovern award for his contributions to entrepreneurship and the Peterson merit scholarship for his contributions to the community and academic performance. He is also an avid golfer and enjoys playing recreational ice hockey and working on home improvement projects.

As the Director of Communications, Rhonda oversees the strategic development and general management of the Businessfriend brand through public relations and marketing efforts worldwide. She joined Businessfriend in the spring of this year rounding out the executive management team and was instrumental in setting communications, social media, and branding policies in her first 90 days. Rhonda is now looking forward to introducing Businessfriend and engaging, innovating, and strategizing in the social media community.

Martin is responsible for the strategic insight that drives great digital experiences. He has 15 years experiences in a variety of agencies and a variety of roles and has developed strategies for Unilever, Diageo, Johnson and Johnson, Agent Provocateur, Sainsbury's and Pedigree. His work on Lynx's Facebook page led to an IPA effectiveness award and he was a course lecturer at the Chartered Institute of Marketing. He studied Philosophy, and occasionally wonders why.

Alicia is a social media strategist, consultant and trainer who helps entrepreneurs do social media the right way so they can stop wasting time and start seeing results from their marketing efforts.

She is the creator of Twitter Brilliance, the most comprehensive Twitter training programme available online, and regularly holds sell out social media workshops in London and Brighton.

Alicia combines her love of systems and marketing with practical honesty. Finding fun and creative ways online to attract more business opportunities for her clients is what she gets excited about.