On the homepage, click the word Forum at the top right. (It doesn't look like a link at all.) Anywho, it takes you to page where you see a little blue box with the most used tags whirling around. It whirls more if you position your cursor over the box. There. That's it.
The best tags are "my ass hurts" and "satire is a clunt", or some version of that.
If a tag is used many times, it is more prominent in the blue box.
Ooh, and I just found out that if you click on a tag in the blue box, it brings up a list of where the tag has appeared. How vy., vy. useful.