Re: removing tags
You might want to explore where that 500 is coming from, that probably shouldn’t happen. I did the same thing just to see if it was inherent to bbPress or maybe just bbPress.org, and it seems it might be just you. I got a blank page (would be nice to see that redirect somewhere else for non-existent tags) but it was showing a 200 ok, and not a 500.
I just realized bbPress doesn’t have anywhere to view/edit tags in the administration panel. Is that coming down the road?