i have to admit that at times, its really hard to pick the best response...as most are so good. i usually wait for 1-2 weeks to mark the best response...unless one came in that hit close to the heart :D
I think, for me, I didn't really know about it until you answered my post on ratings. Also, sometimes it is hard to decide, as a few good ones do come in. Do you rate the best all the time? How do you choose?