it's hard to drool over the avatar cause ya don't know if it is a guy's ass or a girl's ass. i'd hate to get all hot and bothered only to find out it belongs to some dood!
secondly, it makes it hard to be on this site during work hours. i've been busted a few too many times scrolling by and suddenly a sessy pic or avatar or sig shows up just as someone enters my office cubicle. now everyone just hurries by and turns their head the other way when they talk to me. or i get lots of out loud warning before someone is coming to see me. kinda weird yet in a way good!