So I have this really weird problem that I have been trying to figure out. I have wanted to change my gamertag for a while now, and I decided to try messaging the person who had my desired gamertag, the message did not go through because the gamertag did not exist. I was thrilled so I went to change my gamertag, and it said it was already in use. So I logged on to xbox.com to see if someone had it, once again they didn't. I went to this site http://checkgamertag.com/, and it seems pretty legit. I checked my gamertag and all of my friends, and as I expected the site said they were taken, but when I typed in the one I wanted it said it was available. I'm super confused, it seems as though no one has the gamertag, but when I am ready to change it, it says it is taken. All help is appreciated, thanks.