23andMe. MongoDB. Eventbrite. Evernote. Bird. Square. Tumblr. Unity. YouTube. Xoom. Roelof Botha has had a seat on each of these companies’ boards, but his list of investments is much, much long
If you were to write a history of Silicon Valley, you could do it by looking at a series of major diaspora. Companies like Google, Yahoo, Oracle and PayPal attract top talent for years; when they reac