You should allow random avatars, where everytime you refresh the picture is different. To do so just add to the allowed image types asp file(isnt an actual image file).But if you allow it I'll submit a tutorial on how to make random avatars using asp file types.
I dunno...avatars are perhaps te biggest way for user to express themsevles here outside of the words they speak. People grow quite fond of the ones they have, and prefer to change it only when they desire. Besides, after interacting with same same people day after day, sometimes you can tell who someone is just by looking at their avater and not thier name, much like looking at someones face when you meet them. In by adopting a random avatar, you would be putting a mask over yourself. -VGsatomi