If so, it's too bad.. I thought it was a useful feature to help better describe some of the less than descriptive thread titles we get around here, plus I can tell at a glance what the thread is about in general edit: it must only be in certain circumstances, because it appears i can edit the tags on this thread
You can edit/add tags to your own threads, but you can't add/edit anyone else's. We were having trouble with some people adding vulgar tags.