Show participated as tablink?
In my installation I changed line 96 of plugins\Participated\class.participated.plugin.php:
echo 'RequestMethod == 'participated') ? ' class="Active"' : '').'>'.Anchor($MyParticipated, '/discussions/participated', 'MyParticipated TabLink').'';
Adding the CSS-class TabLink will display the tab like the others. This is to keep the UI consistent. No functional change. I tried to get the bookmarks to work - and failed so far. But his plugin saved me.