It's no secret that Facebook saw FarmVille for iOS as writing on the wall: it had to either tap into mobile app revenue or risk losing income (and marketing-savvy developers) whenever someone left the web. Following a beta this summer, the company's solution to its dilemma is now open to everyone. All developers on the social network can build ads that link from Facebook's Android and iOS apps to either Google Play or the App Store -- offering both an easy plug for their native apps and that all-important ad revenue for Facebook. The system currently takes a shotgun approach and may pitch social networkers for apps they already have or don't want, but it should be refined in the next few months to where some curious purchasers won't even have to leave Facebook to load that hot new title. Hopefully the increased recognition for mobile developers is worth sullying our once pristine news feeds.