Hi, I posted this question as part of the official thread to our game but I wasn't getting much feedback so I thought I would start a new thread specifically for this. We are currently looking into the addition of social media features and achievements for our upcoming iPone/Android game KamiCrazy Retro and was wondering what peoples opinions are on the following -  Do you get a game because it has achievements, social media features or both?  If a game didn't have any of these features would it stop you buying it?  Are you signed up to all or some of the ones available (ScoreLoop,Crystal, OpenFeint, Plus+, GameCentre etc) or is all the fragmentation too much to be bothered with?  Which social media features including achievements do you like to see in the games you get?  Which games do you like that you think have currently done this stuff well? (I personally like the facebook scoring integration within doodle jump)  Any other reasons and comments on these features?