Click the little half white/half orange circle on the right hand side of it.
Which minimizes it, but it's still there kinda uselessly. I never use it myself, which just inspired me to find that if you know how to apply some user style rules (Adblock or Stylish extensions for FF would be a couple of ways) to BB pages, doing:
div#toolkit {display: none;}
... will make the toolbar disappear. (I won't help anybody who doesn't know how to do this themselves, sorry.)
damn, I don't know how, but I sure would like to get rid of it. The first thing I always do after logging in is minimizing it.
They are not your friends; they dispise you. I am the only one you can count on. Trust me.