Facebook Isn't On Fortune's 100 Best Employers List

Why didn't Facebook make Fortune's annual list of the 100 best companies to work for?

Fortune‘s latest annual list of the 100 best companies to work for doesn’t include Facebook. Huh?

Facebook recently topped another ranking of the best places to work, based on current employees’ ratings — this was a third-annual list by Glassdoor, which we hadn’t even heard of before the social network put that outfit on the map.

Jobs at the Facebook are among the most-sought after of any employer. In 2010 alone, the social network received 250,000 job applications (compare that to around 2,000 employees).

So which technology companies made the cut for a spot in Fortune’s top 100? SAS is number one. And coming in at number four for the second year in a row is Google. That’s somewhat ironic, since Facebook has been poaching top-ranked employees from Google who are all too happy to make the switch.

The search giant was called out this year for its perks, including free food at its cafeterias, a climbing wall and free laundry. Last year, with revenues up 20 percent, all Google employees received a 10 percent pay hike, which probably didn’t hurt its chances.

What do these lists really mean, since recruiting at Facebook is continuing at a fever pitch? Could it be that once Facebook has an initial public offer employee perks might catch up to those of other companies?

Readers, what do you think of Facebook not appearing on the 2011 list of the best companies to work for?