There was a lot of discussion and disagreement about meta-tags here, but it doesn't seem like a consensus was reached.
A recent question of mine just had the board-games tag added. My preference is not to use that tag as I don't think it really adds value, as it will be used so much. My gut reaction was to remove it, but obviously that person thinks it should be there. They have no way to know I deliberately chose not to use that tag. I could just remove it, but I don't want to start a retagging battle either (not that it would be likely to happen).
So, should we be using tags like board-games and rules, or not?