First, as some of you might have already noticed, I'm currently working on a 'better' forum postbit. (which is the place where your actual post will be shown)
It's like the thread title says really; would you be bothered by a default avatar?
This basically means if you haven't selected an avatar from the (currently 94) stock avatars yet, or you haven't selected to use a custom avatar, your avatar 'space' at the forums postbit will be replaced by a default DIE16 no-avatar-selected avatar.