So I have been buying art for my forumset rotation and finally bought my fifth one today. But I was wondering if there is a limit or you can have as many as you want

There's a size limit, but I don't think there's an image limit. Plus you could always use the rotating image code or manually switch the images out every so often.

http://subeta.net/help/rules.php?act=rule&id=29

I don't believe there is a limit.

Okay, thank you for the help!