Facebook Fuels Growth With Games as Users Flock to ‘Mafia Wars’

Oct. 23 (Bloomberg) -- Facebook Inc. is tapping virtual farmers, mafia dons and online pets to generate cash from the social-networking Web site’s 300 million users.

The company is testing a payment system to gain a cut each time an online-game player buys a digital tractor, weapon or hat on the site. That would give Facebook a piece of the hundreds of millions of dollars that are...