ycombinator?

Y Combinator and FriendFeed don't count, naturally. Somehow, they don't go in the "job" category the same way other jobs do.

This implicitly means Facebook does count. You don't have to answer this one.

In light of YC's recent tie-up with Facebook, it's good to see that there might very well be a voice of caution within the organization.

Note that he said "Google was the only one where me speaking my mind never seemed to cause a problem." So he's not necessarily implying that all criticism is wholly rejected at Facebook, just that his criticism sometimes caused problems.

He is talking about Google-size companies.