I created a very similar app called BuddyMeme (http://buddymeme.com http://buddymeme.com) and we ran into the exact same problem - images posted to Facebook wou

I created a very similar app called BuddyMeme (http://buddymeme.com http://buddymeme.com) and we ran into the exact same problem - images posted to Facebook would often get 50+ likes, but it was tough to convert those impressions into signups onto BuddyMeme.