No one's business, technically
BUT, we all know by now everything offered up to the internet is everyone's business, all the time, no exceptions. It's how we pay for now having access to the world at our fingertips. Yes, we can get almost any question to anything answered within minutes, but the trade is anything we share via internet is available to everyone, forever. Know what thoughts to keep to yourself and which are acceptable for the world to see. I don't think it's about what game the candidate does or does not play, but about comments she made via the game.