I don't have anything in my gallery, so I don't know how notifying artists work. But from what I understand is that news is posted on the site only. Renderosity sends out emails notifying members of items on sale etc. Why not send out news emails indicating rule changes etc. The person can either opt in or out of receiving these emails, and if they opt out and miss out on a significant change like this one being discussed, then they have no one to blame but themselves. It seems that the way news flows on this site is inconsistent from what I've been hearing people say, and not everyone goes to the main page all of the time. I know I don't. I have my book mark set to the forums, and if I want to go anywhere from here, I click the links at the top. Also, a way to avoid inappropriate images would be to have a moderated upload for images. Meaning that any images that are uploaded to the galleries is not posted until it's passed by the moderators/admins of this site, who will either release it or vito it. While that might not be an ideal answer, it would eliminate the "nudity" that some are offended by, and give the mods/admins control over what is posted in the galleries, thereby avoiding having to ban people for misunderstandings or not having been up-to-date on the rule changes.

"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