1) Please keep it PG13. (no nudity)
2) No flaming other people's drawings. Give them constructive critiscm if you think they could do better.
3) And the last rule is....TO HAVE FUN! Become inspired by other people's drawings and use some of their techniques to emphasize your own drawings and etc.
You can post as many pictures as you want. Try to keep them small enough so that people can see the whole entire drawing without having to scroll around the page.