There are features on the forums I'm sure many of you either do not know or are unaware of. First of all, you can leave comments, or visitor messages, on people's profiles. How? Click on the users name, select the Visitor Message link, then hit New Topic and leave a comment. You do not get notices however if you have messages there (a feature I hate) so you must anually check your own profile.
Also, you can upload images into the gallery! You can make a personal gallery and upload images for everyone here to see. Basically you could use it as Photobucket XD (as long as images are within obvious internet etiquette). Also, you can rate and comment on someone's pic as well.
There's also a blog feature that allows you to write blogs, however I'm unsure myself as to how to do this. If you discover how please do tell how.