Speaking of social features, Freeverse told us a little while ago that they were going to use ngmoco's Plus+ for their games, and apparently they've now integrated the popular Flick Fishing with the service. The additions allow for leaderboards, in-game achievements, and multiple profiles and saves on one iPhone, so you can compete with your friends on other iPhones or right there on your own. Flick Fishing was already an excellent game, and with the added social functionality of Plus+, it's worth heading back out onto the water to compete and compare your games with your friends.
As I've said before, having multiple companies competing for these social functions is turning out to be a real boon for consumers and developers alike. All of these services are able to bring out a lot of cross-game features that developers by themselves would have taken much longer to put together on their own.