"This would save Renderosity some money on storage space and it would 'clean up' the galleries where people only leave what they feel is their best work."

Limiting the size of posts would be an interesting idea, although impractical. Some images just can't be reduced enough. I tend to delete some of my images after a certain period of time, I delete those that didn't get any comments or gets the smaller ranks in the same page.

As a member of the fractal group, what I see that happens the most there (I did it some times!) is that you happen to have zillions of variations of a single image just by zooming or changing small details, so people like to post the 3 different variations. With Bryce for example it is very boring to see one post with the model lifting her right arm and other with her lifting her left arm, or just a colour variation.

The fact that lots of posts at once "hide" our own posts isn't bothering me, I often receive comments from old posts - so it seems that people keep digging the archives for old materials. I was amazed when I found a lot of great images that were unnoticed by almost everyone.

I've definitely stopped from viewing the fractal gallery entries daily as I did when I joined, there's too much too see. But we can't stop creativity.