Re: List all Tags?
Probably. Looking at this page for an example…
<li id="tag-87_349081"><a href="https://bbpress.org/forums/tags/tag" rel="tag">tag</a> </li>
349081 is the user ID of whomever made the tag
tag-87 is the tag ID of the tag (which in this case is ‘tag’)
Now you can go to https://bbpress.org/forums/profile/349081 and easily see who that is so you can probably use
get_username(349081) or something to get the name for a mouse over. I don’t know of a way to parse the tag ID number, though.