If you are winning player who can do some in-depth analysis it is not hard to figure out hands you have misplayed. For example, this is a hand from a recent 1000 hand session.
http://forumserver.twoplustwo.com/showfl...=0#Post12644114
I think it is a pretty gross misplay. Considering that 5/ptbb amounts to only one buyin per 1000 hands there isn't much room for making gross plays. I think it is a good idea that an advanced player (one who can detect mistakes) score their session by counting the number of misplayed hands instead of focusing on the money won/lost. (Misplayed hands is pretty broad so you may want to divide it in categories by the degree if grossness).
What do you guys think is the acceptable number of misplays /1000 for a winning 5/ptbb MSNL player? What about HSNL?