[Videx]

But the whole point of tagging is to enable people to find things in the future that a key word search won't. IOW, if the tag appears as a word in the post, it will hit in a regular search. So it's redundant to copy post words to tags. Not to mention you'd have dozens of tags per post.

e.g. A post about engines in Chevys. Only when someone adds the tag "Chevrolet" or "455cc" will the tag search become more useful than the standard keyword search. This mod won't do that, but without it nobody bothers adding tags.