This is kind of funny, but yeah, it was really difficult for me to get past the registration screen (couldn't do it/had to get someone else to do it for me). I doubt you've had this complaint before and maybe it's too tiny to care about, just wanted to mention it.
Considering how many bots we do get in, its probably stopping more legit users than bots anyway.. We'll definitely have to see about changing the registration to be more human friendly and less bot friendly. We have been talking about it for a little while.