Quote - I for one don't see the need to inform anyone of the type of comments that I'll accept., before if I wasn't willing to accept constructive criticism along with the good I had the option to disable the comments box and have neither.

Perhaps the ability to indicate that one is looking for constructive critique will encourage more people to comment. People have often expressed concern about leaving a critique because of responses that are less than "friendly". Personally, knowing a person doesn't want a constructive critique makes it easier for me to just say something nice if it's deserved and not ponder whether or not I'll get a nasty-gram if I tell them they need to work on their antialiasing.

It's all fun and games...
Until the flying monkeys attack!!!