Topic: cloak e-mail addresses!
E-mail harvesters are collecting users' email addresses from the mailto links on the profile pages! What I usually do is, on the server side, replace the @ in the e-mail address with "_at_" (or some other symbol), and then replace it back in JavaScript, outputting something like this:
<SCRIPT>email='<A HREF="mail'+'to:'+'someone_at_somewhere.com">someone_at_somewhere.com</A>'; document.write(email.replace(/_at_/gi, '@'))</SCRIPT>
Most browsers will be able to display this correctly - meanwhile, the e-mail harvesters will have problems, as they look only at the source HTML without first running the scripts. I have been using this method since over two years now to cloak e-mail addresses on various sites, and it's been incredibly effective