Gear Displayed Under Forum User Name

How does one select that? It seems to auto select based on whatever the first three things in my microphone catagory is, and if I delete that category, it defaults to studio equipment, and so on. If I want guitars, for instance, I have to remove EVERY catagory EXCEPT guitars. Which is really kind of silly.

So if there's a way to do that, I'd like to know. If not, it's cool.