I think compelling user interfaces will be how a lot of new startups differentiate themselves. I came to this realization after seeing hipmunk. From a tech st

I think compelling user interfaces will be how a lot of new startups differentiate themselves. I came to this realization after seeing hipmunk. From a tech standpoint, there wasn't anything new. Just api calls. But the way the info was displayed was novel and intuitive. Same can be said for this app. Now I'm trying to teach myself how to "do UI". All that said, so...how do you make the book titles smoothly re-arrange? Not sure how to do this.