Facebook Not On "Greatest" Places to Work List

It looks like Facebook has dropped off the list of "greatest" places to work. What happened to Google being "the" place to work? I don't see it on the list either. Of all well-known tech companies out there, LinkedIn, Orbitz, and CareerBuilder were the only ones to make the list. And for the first time, Facebook entirely dropped off the list. However, of the 25 companies, 12 were tech focused -- so maybe it's just the smaller companies that offer the good life.