You correctly posted your WTB post in WTB forum. But the problem is, all threads including FS and WTB show up in "recent activity" and there, you can't tell which until you'd open the thread. Anyway, it's not a big deal. Most of us do put WTB or FS to be more clear. (or is that clearer?) You didn't do anything wrong.
And thank you very much Ronald! I was digital ... recently went all film (this year) and sold all of it off. Well, except for my EOS lenses, which I'm now using on a fabulous EOS 1V! I am quickly becoming quite addicted to vintage gear, though.