Quote - we are to presume this is a site for artists to express themselves!

You can still upload your nudes and violent images :)  You just can't have nudity or violence in the thumbnail.  I don't see a problem with that.

Now on the other hand had Renderosity said "ok, no more nudity or violence in the galleries", then yes, I can see that as being censorship.

However, cleaning up the gallery arrival pages so that there are no nudity or violence in them, I do not see as censorship because the thumbnail still leads to the actual "non censored" image.

"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