Eddie the Cranky Gamer
I see others doing it (and another one recently) but didn't know how the group felt about it. I'd love to trade an unused (and still current) computer game for a board game.
My understanding is that you can basically try to trade anything - and as long as that stays within reason it doesn't seem to be anything that would cause anyone concern.
However, I've only RARELY seen trades for non-boardgames work out.