I think 25K for an image the size of an avatar is more than adequate.

You have to keep in mind that all of these little images can add up to one big headache for people on slower connections, and you have to admit tha Renderosity doesn't have a history of being a speedy site anyway.

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi