I do about the same as leonhart29. I love all reviews that I receive. Even the occasional, 'that was cool, more please.' I really love the long reviews though, and I don't mind crit if it's honest and not harsh. Flame anyone?
When I review, I try to say more than the average, I love it review, but I'm not known for really lengthy ones either. Not yet anyway. And, I never, ever flame anyone, even if they deserve it.