there is one thing that orfay and yafro never had that i wish they would have and that is a counter that showed how many comments you have made on pictures. it would show how active you are on your friends pics.
Another idea...How about adding a way to 'ignore' a user? Meaning if you ignore someone, their pics (or comments, or both) won't show on either the main page or lounge areas...And a maybe a 'block' feature too, where it would prevent them from commenting on your pics...