Timely Business 2.0 article
It's an increasingly common tale as the Facebook economy picks up steam. In just 10 weeks, hundreds of developers launched more than 2,500 new applications, triggering 139 million downloads. While a possible Facebook IPO or acquisition could change things overnight, for the moment it's a free-for-all.
The apps have names like FoodFight, Zombies, (fluff)Friends, and Fortune Cookie, and they let users indulge in everything from scrawling graffiti and sending virtual cocktails to buying music, brokering loans, and joining charitable causes - usually without leaving their Facebook homepages. Some apps have attracted hundreds of thousands of users, and a select few have pulled in millions.