not a bad start
I am assuming this is version gamma+. Not bad. I can think of all sorts of ways in how certain features may or should evolve. On a cursory review, I can think of at least 4 features that frequent flyers / airline alliance hounds like myself would want to see. I'll be watching this site to see how it matures. Though at this point, I don't necessarily agree with the author of the WashPo article in that the site will change the way we fly. Still, good start. Good luck.