This has been a trend for the last six months or so. Backflip Studios tried a free game as a promotional strategy, and it's turned into a core piece of their bu

This has been a trend for the last six months or so. Backflip Studios tried a free game as a promotional strategy, and it's turned into a core piece of their business. More small developers are realizing promotion is easier with free apps and the market is now large enough to support ad revenue models. http://148apps.biz/backflip-studios-brings-in-serious-cash-with-in-game-ads/ http://148apps.biz/backflip-studios-brings-in-serious-cash-w...