I just came across this thread. If you look at the first post:

What is going on?!

If you click the link you get "Browse Site by Tags" where you can find fe. this post with even more incredible tag. Not exatcly a fault nor causing me any trouble but I just wonder how did that happen...

I assume perhaps an errant attempt(s) at a signature?

Every new poster seems to "file under" this and that, but I never understood what that tag thing is anyway and how I could make use of it

Have to admit that this forum has plenty of weird concepts that I've never seen anywhere else, it does take a while to get a grasp of it...

Now I see that I have [Edit tags] button at the end of my post (first on the thread). Then I can type text myself or select from a list, which do have some quite interesting choises...

On the first page of the forums (list of the areas) there is a tag list on the right, the idea seems that the threads have a tag indicating it's main point, and then by searching with tags one can find threads easily.

I agree, Mika. Only today I find out the groups function, never came across that before.