We have a social tag, which is actually one of our top tags. That said, it's entirely an umbrella tag for our tags describing specific kinds of questions that have to do with social dynamics. We have group-dynamics problem-player gm-techniques etc. It seems to me that any question just tagged social and to which a more specific tag didn't apply would garner close votes as 'too broad' quite quickly.
While there is certainly some value in being able to favorite all those tags at once rather than doing so individually, that relies on people consistently tagging questions with the social tag, which is a waste of tag space and also conforms not only this site's particular definition of meta-tagging but actually the network-wide one as well.
Thus it seems to me the tag should be disused. Is there a reason we shouldn't burn it?