The Shuushuu forums are a great place to get to know other members. Feel free to introduce yourself, post a picture, chat about anime, art, or whatever you like.
The Shuushuu Wiki provide a vast amount of information on the artists you see on the image board. You can find artist sites, lists of artbooks, doujin, and more.
Visit the Shuushuu IRC channel to chat in real-time with other members. Just watch out. If you're not careful you may get addicted!
The recent tag list displays the latest tags added by the staff.