Joining Marc Andreessen, Roelof Botha, Ron Conway, Marissa Mayer, Sheryl Sandberg and Yossi Vardi are three new additions to the TechCrunch50 expert panel. We are pleased to announce Chris DeWolfe, Sean Parker and Jeff Weiner will be joining us at TechCrunch50.

Stay tuned as additional announcements about experts and panels will be up next. Background on Chris, Sean and Jeff is as follows:

	Chris DeWolfe Chris DeWolfe is the co-founder and chief executive officer of MySpace.com, the leading online lifestyle portal. DeWolfe, alongside co-founder and president, Tom Anderson, created a new platform for a generation to communicate and discover culture based around the self expression and connectivity of the site’s 110 million active users. As MySpace’s CEO, DeWolfe is responsible for all aspects of the site’s strategic vision and the execution of its global business initiatives. Along the way, DeWolfe has led strategic initiatives that have extended the site’s reach into a number of vertical categories – such as online video (MySpaceTV), politics (MySpace Impact), news, music and film – and at present a total of 29 international markets. Under DeWolfe’s leadership, MySpace has grown exponentially since its launch in 2004, with an average of 300,000 new users signing up daily. More than 70 million people in the U.S. visit the site each month, creating a user composition that includes politicians, bands, filmmakers, comedians, photographers, and people wanting to communicate with friends and plan their social lives. CrunchBase profile.
	Sean Parker Sean Parker is the co-founder and Chairman of Causes on Facebook and MySpace, a new network that aims to enable large-scale political and social activism on the Internet. Sean is also a Managing Partner at The Founders Fund, an early stage venture capital firm based in San Francisco . Previously, Sean was the co-founder of the category defining Web ventures Napster, Plaxo, and Facebook. At Napster, Sean helped to design the Napster client software and led the company’s initial financing and strategy. Under Sean’s leadership, Napster became the fastest adopted client software application in history. Following Napster, Sean co-founded and served as President of Plaxo, where he pioneered the viral engineering techniques used to deploy Plaxo’s flagship smart address book product, ultimately acquiring more than 15 million users. In 2004, Sean left Plaxo to become the founding President of Facebook, one of the most rapidly growing sites on the Internet today. Sean sits on the boards of several private companies. CrunchBase profile.
	Jeff Weiner Jeff Weiner is an Executive-in-Residence for leading Venture Capital firms Accel Partners and Greylock Partners. Prior to joining Accel and Greylock, Weiner served in key leadership roles at Yahoo for over seven years, most recently as the Executive Vice President of Yahoo’s Network Division. In this position he led a team of over 3,000 employees, managing products reaching over 500 million consumers, and overseeing a P&L responsible for roughly $3 billion in annual revenue. During his tenure, Weiner helped drive the Networkʼs Open and Social strategy as well as expansion of the companyʼs category-leading consumer web products, including Yahoo’s Front Doors, Communications and Community products, Search, and Media properties. Prior to his Network role, Weiner was part of the Search leadership team that directed the acquisition and integration of Inktomi, AltaVista, and FAST as well as the development of Yahoo Search Technology. From 2001 to 2002, Weiner oversaw Corporate Development at Yahoo, where he was responsible for the development and modification of overall corporate and individual business unit strategy and M&A. Weiner is also actively involved in the non-profit sector, with specific focus on leveraging digital capabilities to broaden the reach and scale of high impact causes. He currently serves on the Board of Directors of DonorsChoose.org and Malaria No More. CrunchBase profile.

In addition to announcing our next three experts, we would also like to give a “shout out” to a returning partner. International law firm Perkins Coie is joining us again this year as a supporter of TechCrunch50. Thank you!!

Perkins Coie is a leading international law firm offering a full spectrum of legal services. With more than 650 lawyers in 14 offices across the United States and in China, the firm serves great companies ranging in size from start-ups to FORTUNE 100. Many of the firm’s clients are leaders in traditional industries as well as emerging technology markets, including Internet, software, digital media, hardware and telecommunications. The firm’s Emerging Companies attorneys have extensive experience in working with technology companies at all stages of development, from start-up planning to all aspects of capital formation. We help our clients protect and leverage their intellectual property, secure financing from venture capitalists, private equity groups and others, develop growth strategies and, when appropriate, exit strategies. As our clients grow, we work with them in public offerings, partnering ventures, and mergers and acquisitions.

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