Good to know! Back in the days my friend and I figured out that if we bought Xbox Live Arcade games on someone's console with the other person's account, both would effectively own the full game and could play it (albeit not at the same time). We used this scheme to share account passwords and get more Gamerscore out of some titles. My then 14-year old self was quite disappointed to find out he lost all shared games when his console was replaced after a RRoD. I guess these games weren't transferable.