For social networks, it's game on: USAToday.com

Games are the killer app on social networks. Tens of millions of consumers are opting to play simple, quick games on Facebook, MySpace and elsewhere — often via their mobile devices. An estimated 100 million people are recent devotees of social games such as FarmVille, Mafia Wars, Sorority Life and Bejeweled.

The gamers, many of whom eschewed traditional video-game consoles, have spurred revenue for Facebook. The 5-year-old social-networking site recently announced it was operating in the black — a major feat in an industry beset by doubts about its ability to be profitable.

Meanwhile, the radical change in the way Americans play games has had a ripple effect on the $45 billion gaming industry. Developers large and small are designing easy-to-play diversions in hopes of capitalizing on the craze. For some, such as Nintendo and Electronic Arts (EA), it’s a return to simpler graphics and elementary objectives.

Read the entire article at USAToday.com