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At TEDIndia, Pranav Mistry demos several tools that help the physical world interact with the world of data -- including a deep look at his SixthSense device and a new, paradigm-shifting paper "laptop." In an onstage Q&A, Mistry says he'll open-source the software behind SixthSense, to open its possibilities to all.

Greg Tseng and Johann Schleier-Smith Tagged Inc. co-founded

Age: 28 years old

Project: Tagged

Wealth: $45 million

Tagged Inc. was co-founded by Harvard graduates and entrepreneurs Greg Tseng and Johann Schleier-Smith. Tagged.com was launched in October 2004 by Tagged Inc. and is privately owned.Tagged.com is a social networking site founded in 2004. Tagged is the subject of numerous customer complaints for sending deceptive bulk mail and is regarded as a phishing and spamming site and an "E-mail scam" by consumer anti-fraud advocates. It is headquartered in San Francisco, California, United States

Threadless Co-founders Jake Nickell

Age: 28 years old

Project: Threadless

Wealth: $50 million

Threadless is a community-centered online apparel store run by skinnyCorp of Chicago, Illinois, since 2000. Co-founders Jake Nickell and Jacob DeHart started the company with $1,000 in seed money after entering an Internet t-shirt design contest.

Members of the Threadless community submit t-shirt designs online; the designs are then put to a public vote. A small percentage of submitted designs are selected for printing and sold through an online store. Creators of the winning designs receive a prize of cash and store credit.

ImageShack Co.founder Alexander Levin

Age: 23 years old

Project: ImageShack

Wealth: $56 million

ImageShack is an image hosting website on the Internet. ImageShack has a subscription service, but the majority of their revenue is produced from advertising related to their free image hosting. The imageshack.us Alexa ranking as of September 25, 2007 is one of the top 40's. According to Nielsen//NetRatings, ImageShack was the fourth fastest growing web brand in July, 2006.

PopCap Games Co-founder John Vechey

Age: 28 years old

Project: PopCap Games

Wealth: $60 million

PopCap Games is a leading American casual game developer and publisher, based in Seattle, Washington, United States. It was founded in 2000 by John Vechey, Brian Fiete and Jason Kapalka, and currently employs more than 180 people. Most of Popcap's games can be played free in a limited form, with the full version available for a fee.

PopCap’s flagship title Bejeweled has sold more than 25 million units across all major platforms. PopCap games are available for Web, PC and Mac, Xbox, Xbox 360, PlayStation 3, cell-phones, PDAs, iPod Classic, iPhone/Touch and other mobile devices.

DeviantArt Co-founder Angelo Sotira

Age: 26 years old

Project: DeviantART

Wealth: $75 million

DeviantArt (official typeset as deviantART; commonly abbreviated as dA) is an American online community with worldwide appeal showcasing various forms of user-made artwork. It was first launched on August 7, 2000 by Scott Jarkoff, Matthew Stephens, Angelo Sotira and others. DeviantArt, Inc. is headquartered in the Hollywood area of Los Angeles, California, United States. As of May 2009[update] the site consists of over 10 million members, over 81 million submissions, and receives around 105,000 submissions per day. The domain deviantart.com attracted at least 36 million visitors annually by 2008 according to a Compete.com study.

DeviantArt aims to provide a place for any artist to exhibit and discuss works. Works are organized in a comprehensive category structure, including photography, digital art, traditional art, literature, Flash, filmmaking, skins for applications and others, along with extensive downloadable resources such as tutorials and stock photography. "Fella," a small robotic cat character, is the official DeviantArt masco

Fast Hosts founder Andrew Michael

Age: 29 years old

Project: Fast Hosts

Wealth: $110 million