I agree that implementation-wise, there are probably only so many ways to do this. While the overall algorithm is basically the same (see http://github.com/fac

I agree that implementation-wise, there are probably only so many ways to do this. While the overall algorithm is basically the same (see http://github.com/facebook/three20/commit/0edd0ca58bf3b352e7ab4b001c3470a8c1b70ae5#L2R89 http://github.com/facebook/three20/commit/0edd0ca58bf3b352e7... versus http://github.com/enormego/EGOTableViewPullRefresh/blob/master/EGOTableViewPullRefresh/Classes/Controller/RootViewController.m#L189 http://github.com/enormego/EGOTableViewPullRefresh/blob/mast... ), I'll give the Three20 folks credit for cleaning their implementation up into a view+delegate system. It's a bold claim to say that your particular implementation has been "taken" when this sort of open idea and algorithm reuse happens all the time. In this situation, I'm sure once the dust clears credit will be given where it's due. Tangent: Who wants to guess that some of the HN commenters up-in-arms about this are some of the folks who are cry foul about software patents?