I host a site/forum for a popular music group, and we are looking at remaking the whole site and putting it on it's own server before they release they're new album. The setup will have the main site at www.blabla.com and then member sites at www.blabla.com/~user the idea is that forum members that want an account on the site can just ask for one it's free the reason for this is so they can make their own smaller sites and some members are working on a album with the group so they need somewhere to submit their work. Right now they are all ftping in under the same account and making a folder with their name to dump stuff in there. We are looking for a way to watermark the pages they may put up for a website with a small text or image in the corner of the page that points back to the main site.
