A few months back, MattR suggested tagging topics as a way to cope with the inability of the Forum to easily implement new sub-forums.
I've been trying to be better about tagging content, but it's often frustrating to me because there are MANY cases where I would love to add some tags to a new topic, but the option to add tags is simply not there.
Why is it that sometimes you can add tags, but often you can not? Is there some rubric that would help the poor Forum user to predict when tagging might be supported and when it won't? Is it only available for some Forums, but not others?