This comes from TechCrunch as well:
Yesterday, we wrote about Microsoft’s pledge to feed the hungry if you download their web browser. That campaign is misleading, and it really shows when you compare it to another campaign of a similar nature.
Today, while at Facebook’s new headquarters in Palo Alto, we noticed that it too is involved in a campaign to end hunger. But rather than pledging to feed hungry people only if you download something from Facebook, the company is doing it on the down-low, asking its employees to help out, in its own cafeteria.
Link to Share Your Lunch 2009 Campaign.