Very cool! I've always loved Scrabble but disliked the (in hindsight) unbalanced letter scores and frequencies. This gives the game a new twist and a lot of room for creativity. I also like the massive scoring bonuses - it reminds me of the racing game TrackMania, where cars drive around ridiculous, physics-defying loops and such. It's a classic concept, but amped up to a new fun level.
One question: Are the bots marked somehow? I played a few games, but was a little bummed when I realized that my opponents were playing instantly and not responding to any of my messages.