Trip forum
Trip_forum module is meant to be a simpler and lighter replacement to standard Drupal forums.
It also incorporates a experimental approach to navigating between forums. Instead
of standard folderlike forums/subforums structure, it displays just a list of all entries in
one page, along with taxonomy terms for every entry.
Whenever clicking on a term, it "filters" the list, so only entries beloging to that term
will be displayed.