Joel Lunenfeld
Director of Global Brand Strategy, Twitter
Joel Lunenfeld is the Director of Global Brand Strategy at Twitter, leading a team focused on creating custom advertising solutions for the most influential and iconic brands in the world. Joel has been one of the top influencers in the digital space for over a decade. He is known for encouraging his clients and teams to venture down unchartered paths to discover new ways of igniting conversations between brands and people.

Prior to joining Twitter, Joel was a founding member and CEO of Moxie Interactive, a top digital agency, leading engagement with world-class brands such as Verizon Wireless, L’Oreal, Twentieth Century Fox and Coca-Cola. Joel is an entrepreneur and change agent that believes in the power of participation and the new role technology plays connecting brands and their customers. You can follow Joel on Twitter at @joell

Tim Mahlman
Chief Revenue Officer, Klout
Tim joins Klout with over 16 years of online advertising experience across Asia, Europe and the United States. Prior to Klout, Tim was Chief Revenue Officer at Turn overseeing the Global Business and execution of their Demand Side and Database Management Platforms, used by 20 of the Top Fortune 100 companies. Prior to Turn, Tim served as the Vice President of Network Sales at Yahoo! where he was responsible for overseeing the $600M+ performance display advertising division. While at Yahoo!, Tim delivered on innovative audience buying strategies, which produced best in class scale and efficiency for their marketing spend. He also guided Yahoo! in growing its non-guaranteed inventory by 4x, showing the strongest growth in recent company history.

Catherine Cook
Co-founder, myYearbook and Vice President, Brand Strategy, Quepasa Corporation

Catherine is the Vice President, Brand Strategy for Quepasa Corporation, the public market leader for social discovery and owner of Latin-American platform Quepasa and North-American platform myYearbook. Catherine co-founded myYearbook, with her brother Dave in 2005. The company merged with the Quepasa Corporation in Nov. 2011. Catherine is responsible for creating some of the most important applications on myYearbook and has been instrumental in driving the site’s growth by conceiving of the next popular features. As part of Quepasa Corp.’s management team, Catherine will continue to drive new features that deliver on our mission -- to be the best place to meet new people.

Catherine graduated Georgetown University in 2011, where she majored in OPIM and marketing. Catherine has been reported on extensively in CNBC, MTV, ABC News, Fox News, CosmoGIRL, BusinessWeek, the San Francisco Chronicle, and CBS.

Michael Greer
Chief Product Officer & Chief Technology Officer, The Onion
Michael Greer has led digital products for The Onion and its partner brand the A.V. Club for the last 5 years. He is charged with delivering their comedy in its many forms to a hungry and tech-saavy world. His team has grown both brands across many platforms, and successfully integrated sponsors into satirical humor for the mobile & social mass audience. Greer joined The Onion from Time Warner, where he managed the web architects at Time Inc Interactive on such digital brands as People, EW, and InStyle.

Simon Heseltine
Director of SEO, AOL/Huffington Post
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. 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. He also developed and delivered organic search and social media training programs for clients.

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 teaches SEO at Georgetown University in Washington D.C. as part of their Digital Media Management program.

David Perry
Business Development Executive, Software & Services, Google
David Perry is a business development executive within Google's software and services vertical. He helps global B2B software and services companies leverage Google’s advertising technologies to generate demand and build awareness of their solutions. Prior to joining Google in 2010, David was a business development executive at IBM, where he focused on creating a partnership “ecosystem” by recruiting six leading software companies to enhance complex global IBM solutions. As a senior consultant, also at IBM, he worked across several industries including electronics, financial services, telecommunications, aerospace & defense and automotive. David earned his bachelor’s degree at Colgate University and his MBA at the Johnson School at Cornell University.

Prerna Gupta
CEO, Khush
Prerna Gupta is CEO of Khush, developer of the popular intelligent music apps Songify and LaDiDa. Khush's goal is to make music self-expression as ubiquitous as social expression is today, by using artificial intelligence to lower barriers to music creation. Songify and LaDiDa have been downloaded over 7 million times and have been used by people all over the world to create over 70 million songs. Prerna oversees product strategy, business development and marketing at Khush. In the past year, she has produced numerous viral music videos for LaDiDa, which have been viewed over 100 million times on YouTube. Prerna was voted one of FastCompany's Most Influential Women in Tech 2011, and her writing has been published in the New York Times and TechCrunch. Prerna studied Economics and Computer Science at Stanford University and worked on marketing strategy at Monitor Group and early-stage deal sourcing at Summit Partners before making the move to entrepreneurship. Her favorite instrument is her voice.

John Lawson
Founder, ColderICE.com
John is the CEO of 3rd Power Outlet and the founder of the award-winning e-commerce industry blog at ColderICE.com. John is an Platinum eBay Power Seller, Top-Rated Amazon Seller, Social Media Personality and e-commerce analyst for Wall-Street firms. John specializes in multi-channel e-commerce, social rich-media marketing and mobile commerce.

Named Small Business Influencer Champion by Small Biz Trends and Savviest in Social Media by Startup Nation, John Lawson, formally of Accenture consulting firm, today is an Ecommerce Business CEO, International Business Keynote Speaker, Award-winning Social Media Strategist, American Express Featured TV Personality and appeared on Fox News.

Jack Krawczyk
Senior Product Marketing Manager, StumbleUpon
As Senior Product Marketing Manager at StumbleUpon, Jack Krawczyk is responsible for the product marketing development of advertising and partnership solutions. Focused on Paid Discovery, StumbleUpon’s social media marketing platform, Jack has been working closely with marketers to understand how to better engage brand promise with consumers who are in the mindset of discovery. Jack is also responsible for the distribution of StumbleUpon traffic solutions, which enable site owners to more deeply engage and grow their audience.

Prior to joining StumbleUpon, Jack was at Google where he worked on the development of Google+, and previously industry marketing management of Fortune 500 advertising relationships in the media & entertainment, financial services, travel and local services sectors. He has also worked as an analyst at Banc of America Securities. Jack holds a BS in Information Systems from Carnegie Mellon University.

Rogelio (Ro) Choy
COO, Formspring
Formspring is a global service that encourages millions of people around the world to respond to one another in an authentic and meaningful way. As one of the fastest growing Web sites in 2010, Formspring has seen incredible growth in the past 18 months with over 25M members and 3.5M daily unique visitors.

Ro was previously the CEO of Peerpong, a Q&A service using NLP/semantics for identifying interests and knowledge from social streams. Prior to Peerpong, Ro was Chief Revenue Officer for RockYou and responsible for leading all the business efforts for the company and Director at eBay Motors, leading the online parts business. Prior to eBay, Ro co-founded Cima Systems, a leading VOIP software provider for auto dealers. Ro serves as an advisor to a number of social media focused startups including Applifer, Nanigans, Wildfire Interactive, Project Slice, Adnectar, 500 Friends, Guestmob, Facepad, Replybuy, J2Play, GamesthatGive and Groupcard.

Amanda Steinberg
Founder & CEO, DailyWorth
Amanda Steinberg started DailyWorth.com as a way to give women key insights into building net worth. DailyWorth stands out as the go-to source about personal finance for smart, ambitious women. Since its inception in January 2009, DailyWorth has garnered 100,000+ subscribers and a stream of media appearances including the New York Times, Forbes, USA Today, and a recent 2-page spread in Cosmopolitan magazine. Prior to DailyWorth, Steinberg owned and operated multiple Website development consultancies. A graduate of Columbia University, Steinberg also contributes to ForbesWoman.com

Jeff Ragovin
Chief Revenue Officer, Buddy Media
Jeff has more than a decade of experience driving revenue and building expansive brand relationships at major technology and marketing firms. As Chief Revenue Officer, Jeff leads sales efforts to grow revenue and guide brands in developing social media presences that are instrumental in growing their business. Jeff has played a central role in guiding Buddy Media from a start-up into the premiere Facebook Management System. Prior to joining Buddy Media, Jeff lead global sales at Acronym Media, one of the largest search marketing agencies in the world, and Acxiom (Nasdaq: ACXM) a global interactive marketing services firm.

Matt Crenshaw
VP of Marketing & Analytics, Discovery Digital Media, Discovery Communications
Matt oversees audience development efforts for Discovery's entire portfolio of digital brands, including Discovery Channel, TLC, Animal Planet and Howstuffworks. His expertise lies in applying data-driven strategies to engage audiences through search, social media, brand extensions and media partnerships.

Matt was part of the management team at Howstuffworks when the company was acquired by Discovery in 2007. At Howstuffworks, he focused on growing the site's publishing platform and turning the site from a niche content publisher into one of the most popular destinations on the Web. Matt holds an undergraduate degree from the University of Georgia and a master's degree from Harvard University.

Laurie Hood
Vice President of Product Marketing, Silverpop
Laurie Hood is currently vice president of product marketing for Silverpop, a leading provider of digital marketing and marketing automation solutions. In this role Hood is responsible for product- and market-specific messaging and positioning, product launch activities and sales enablement.

Hood brings 20 years of experience in technology marketing and product management to Silverpop. Prior to joining Silverpop, she was vice president of product management for Equifax Technology and Analytical Services.

Clint Smith
Co-founder & CEO, Emma®
Clint Smith is the co-founder & CEO of Emma, the Web-based email marketing and communications service. Launched in 2003, Emma powers the email newsletters and campaigns of more than 30,000 organizations around the world, supporting the efforts of stylish small businesses, nonprofits and agencies around the U.S. and beyond. Prior to starting Emma, Clint was an editor with CitySearch.com and the vice president of product for Smallbusiness.com. He is a graduate of Vanderbilt University with a degree in history and resides in Nashville with his wife and three kids. He is unreasonably good at air hockey.

Adam Harrell
Founder & President, nebo
Adam is founder and President of nebo, a leading digital marketing and design agency located in Atlanta. Adam started nebo in 2004 and has been instrumental in building the company into a multi-million dollar agency serving some of the world’s best brands.

Adam's passion is helping clients craft interactive experiences that connect with their customers. He believes that a good user interface shouldn't require instructions, and that design can be a differentiator. With a bevy of awards under his belt and a love of all things digital, Adam's energetic approach is a key part of what differentiates nebo from the competition.