Big success takes longer to be visible since early acquisitions are typically small. I think weatherbill is doing very well, and there are quite a few promising

Big success takes longer to be visible since early acquisitions are typically small. I think weatherbill is doing very well, and there are quite a few promising yc companies started by former Googlers (such as optimizely). And of course 2/3 of the Twitter founders were previously at Google. I might also mention FriendFeed :)