Hi all, Long time lurker here! So I've developed a simple game which is approved and in the app store. I've created a mini-site and have global high scores using my own system. My plan is to add more games as it goes with single "sign-on" using the udid. I recently came across http://openfeint.com/ (and others) and was curious to see if people had any pros/cons in particular, Can you import users? Can you import their scores? Do you find it boosts sales? Do you use all features? In-game chat seems pointless for most games. Do you find the per user cost to be inhibitive? How is billing taken care of, the pricing list suggests from 0-100 users of an app is free? Is this the case? My main concern is the ROI. Even at $0.04 per user this is a moderate dent on profits per app sale (at least for those in the Tier 1/2 levels) Do you feel it is worth it in terms of promoting your apps? Any other hints and tips would be great. Cheers