I don't work at either, but know a lot of people at both. Anecdotally, both sets of people really like their jobs a lot. I think the people at Facebook feel the

I don't work at either, but know a lot of people at both. Anecdotally, both sets of people really like their jobs a lot. I think the people at Facebook feel they have more structure. This is desireable for some people, less so for others.