Prismatic is an awesome service. I've really enjoyed using it for the past few months. It's nice to see a mobile application so I can be just as obsessed with it on the go.

However, I agree with rabidsnail, I think the multitude of unique gestures are too much for most users to take in and there are some odd choices like pull to refresh even though the concept seems to be an infinite list, and jumping to titles which makes the scrolling seem jerky.

Still, the core functionality is there and I will definitely use the app on a daily (if not hourly) basis.

Great job!