Something seems to wrong with OAuth.
When that's sorted out, this is going to be a boon. I had the opportunity to beta-test and, while the app isn't able to do some thing as well as the website (e.g. buying and sell cards from the market can be a tad cumbersome), it's a great mobile addition to the game and makes it possible to play ELO and Survivor anytime, anywhere. 3G isn't quite fast enough to play hyper-competitively in daily tournaments, but I was able to finish in the top 25 playing through an hour. That could be a problem with AT&T's network where I am, though. Latency is always insanely high