Don't look now, but it would seem that people love them some Angry Birds. A shocker, we know. Rovio announced at the annual Game Developers Conference (GDC) that the free-with-ads Android version of the popular game had been downloaded an astounding 30 million times. What is even more impressive is that Rovio claimed five million downloads back in early December. They said they were pulling in $1 million in ad revenue back then, so some quick math would estimate that they might be raking in north of $6 million per month now. That's a lot of irate avians.