So David Sacks' new internet venture has been revealed on his profile on the Linked In network . Sacks, formerly chief operating officer at Paypal, left the online payments outfit for a disgustingly successful foray in Hollywood, before being lured back to technology by the boom. Sacks' startup mission — "to create a family tree of the whole world" — is ambitious. He might want to start with a network diagram of Paypal alumni.Geni took money from the Founders Fund , the alternative venture capital firm set up by Sacks' Stanford classmate, and Paypal boss, Peter Thiel . The runner-up, we hear: Sequoia Capital. And who is that venture capital firm's rising star? Roelof Botha , another former colleague of Sacks at Paypal, who made his name by investing in Youtube , yet another company founded by Paypal veterans.