CraigsList called non-profit, is it really?

Craigslist calls itself a non-profit website. Is it?

This is a picture of how much CraigsList earns:

2003 - us $ 7 million
2007 - us $ 55 million
2008 - us $ 81 million

CraigsList has 25 employees. Considering all of them have to get paid, does all that money required to pay the employees? Apparently it seems to come down to the point "we are non-profit, but we really are not".