Thank you, gentlemen, for straightening me out. I don't worry about much, but I got this into my head and it wouldn't go away. I hoped my pursuit of teeth was not exposing me to unacceptable risk, and it appears that is not the case.
This is another custom island. This one could be used for ads. This spot is one of the best places for ads on your site to be placed. This can be enabled/disabled on a per forum basis.