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Ark.com is a search engine for people. With Ark, you can search for new people, old classmates, new business contacts, and even your friends. With over a billion social network profiles indexed, and using a modern architecture, Ark provided the most comprehensive people search engine in the world. Prior to founding Ark, our team has experience at Google, AOL, Symantec, Lithium, Yahoo! Research and Y-Combinator.

Get more out of conferences with http://lanyrd.com/ - the social conference directory. Find conferences that your Twitter friends are going to, build up a speaker portfolio of talks you have given, and catch up on what happened at conferences you missed or what's going on at conferences right now