I'm not new to the forums or the whole system of Xbox. Still I can't wrap my head around why some gamertags are unavailable. Using third party gamertag checkers seem to be unreliable. But when I try to search for friends with certain names and they don't exist currently and previously in some situations I find that they're still unavailable.
I guess I would like someone to explain to me the system. Also why Zune and Xbox share a same set of gamertag availability, which is stupid in my opinion.