Eh. I have it. Use it sometimes, don't other times. It doesn't have any admin/mod features built in, so I feel a bit handicapped when I use it here or on ccw.co.

As a normal user, I see the benefits. But then again, the simple mobile theme seems to do much of the same for me for free. But the $3 or whatever it is didn't really hurt much when I paid for it either.