I'm enjoying the game (other than as Jeff pointed out the complete retardedness of the ads), but it is crazy buggy. Jumping does random things sometimes with the A button and wall riding is almost impossible. I'll jump to wallride and the character will just fall off the ledge, skate for a second, and then jump. It's killing me. 
 
There are problems with getting stuck in the terrain and having it kill you and destroy all your flow. 
 
It is also hard to jump onto the rails. it feels like you ollie way too high and if you are moving fast you can have issues hitting the rails. 
 
Other than these few things I'm enjoying it. It doesnt feel as solid as the old tony hawk games but its a nice change of pace from that crazy series.