Facebook is attempting to formally get into the app game with Facebook App Center, which features an interface similar to the iTunes App Store or Google Play. It’s not exactly an app store, yet, but it could be in the future.
For desktop users, both free and paid apps will be available. The Facebook App Center won’t have every app for Facebook, though – only the most popular and highly rated (about 600, at the start) will be featured. Like other well-established app stores, each app is accompanied by a detailed description page. Users can also browse for mobile apps from the iTunes App Store and Google Play using Send to Mobile. All that actually does is redirect your mobile device to the appropriate app page in the iTunes App Store or Google Play.
The Facebook App Center is available on mobile devices, too. Again, if a download is required, users will be redirected to the appropriate app store.
Many are seeing this as a move to prepare for a Facebook phone in the future, by laying the groundwork for a fully-fledged app store. That’s possible, but I would think it would be hard to gauge the feasibility of that kind of a project from an app center that mostly redirects to other app stores. It’ll be hard to measure the amount of interest people have in an actual Facebook store. I guess we’ll find out what, if anything, Facebook is planning soon enough.