I've noticed since the shift that it is not immediately apparent which forum a thread is in (the link address doesn't indicate it). I see a lot of posts every day to threads that are in class forums etc where the poster doesn't realise the forum they are posting in. Because often, people who create new threads don't indicate the discussion type in the title. This is especially a problem when people click on one of the five most recently responded to threads on the front page.
A work around to this would be to have little icon indicators next to the recent activity topic links. For classes, the class icon could appear. But this could prove to be tricky for things such as the Cataclysm professions forum, etc, unless people became familiar with icon selections. Another idea would be to have a small indication in brackets to the left of the topic title. For example: [Druid] Race Changing in Cata? or [General PvP] What do you make of these changes?
Anyway, if you guys have any other suggestions about how we can tell immediately what forum a topic is in, speak up here and let the admin know.