I'm sure this has been suggested before and probably isn't allowed for secruity reasons and other purposes.
But this scam right here made me start thinking-
http://forums.d2jsp.org/topic.php?t=63892657&f=53If logs were public, you would be able to see obvious multis left and right, and avoid scams, etc.
I would go more in depth, but I'm lazy and it seems self explanatory.