Application name: FaceDouble
This F8 app is based on an existing website, FaceDouble.com. The service allows you to make comparisons between submitted photos that are look-a-likes for celebrities. You can submit photos from web or mobile.

Facebook directory listing:
http://apps.facebook.com/facedouble
App development time: seven days
Submission process / growth schedule
Submitted to Facebook: Saturday
Approved: Sunday
Adoption Rate: installed by 716 users on Monday (at time of this post)
Post-Launch Tweaks
Facebook users can easily uninstall any app they no longer find useful or interesting. They may be quick to install, but even quicker to uninstall 3rd party applications. It seems critical to tweak any Facebook app post-launch by reacting to user feedback. One dissatisfied user of the FaceDouble app posted his reasons for uninstalling it. “I wouldn’t remove (the FaceDouble F8 app) if it didn’t take up half (the space on his profile) lol.” Carefully listening to any user feedback can increase the likelihood of long-term success for a Facebook app.
Subscription-Based Facebook Apps
FaceDouble sells a $3.99 monthly subscription to their service, however I am unclear what this premium service includes. I look forward to seeing more data on install/uninstall rates of future subscription-based apps for the Facebook platform.
Disclosure: I have no ownership interest or relationships with anyone with ownership interest in any services or sites discussed in this post.
More info about FaceDouble F8 launch is found at parand.com
FaceDouble appears to be owned or operated by http://teamsoa.com/













