Not long ago, the ultimate measure of a successful Facebook promotion was fan growth, observes Matt Simpson, interactive marketing director, Bulbstorm, guesting on the Convince&Convert blog. But fan growth is simply not enough, Simpson says. Throw out a sweepstakes app, dangle a free iPad and buy some cheap Facebook ads, and you've bought some fans. But then what? Simpson says it's time marketers adjust their aims beyond that initial click of the "like" button and toward real engagement. He presents ways Bulbstorm measures Facebook promotion success in the post-"like" world.