A recent question about Magic was tagged with both magic-the-gathering and trading-card-game. I definitely understand the first tag, but I wonder if the second one is appropriate on a game-specific question. In a more general sense, I'm asking about when genre tags should be used.
To me, a genre tag should be used only for questions that apply to multiple games in a genre or to the genre as a whole. This question is a good example:
Adding the genre tag to questions about a specific game doesn't seem to be helpful: of course every question about Magic is about a trading-card game. In the past, that seems to have been the consensus ... only nine questions are tagged with trading-card-game, and only seven of those are specific to Magic (one more is specific to Pokémon), a very small subset of the total Magic pool.
It's simple enough to edit trading-card-game out of the game-specific questions, but I thought it would be better to ask first to see if the community feels it's necessary or even desired.