It’s a small forum, but I don’t really get people tagging and I’m not sure I see the use in general anyway (if no-one minds a discussion?). I’m really just tagging because it’s there. I can see how it’s useful for images, yeah, but topics doesn’t seem to be the sort of thing tags are useful for. They lend themselves to text-based searching so well anyway. Maybe if you really liked reading through topics by theme?