Using Firefox, the breadcrumbs are at the top of the forum page, but I haven't even used them. I just click on the forum I'm interested in to left. I also get here by a bookmark I made on my computer which takes me directly to the Home category. That way I can bypass all the "most popular" and blog stuff on the main page.
The breadcrumbs on this page look like this:

I'm not sure on the tags, but I decided to tag VPH, Valerie, and CIJ into one of my posts, just in case it helps the search feature work more efficiently, for anyone who is trying to find posts on those subjects. Maybe someone else can offer more help.