Ok so I searched Zune and Xbox for the Gamertag "Captain Strayer" and it was NOT taken yesterday, I just came home from work to change it and it's taken, I checked Zune and Xbox and it says it doesn't exist.
When I searched that GT it took me to someone who has 50210 gamer score.
Zune, Games for Windows Live and Zune all utilize the Gamer Tag system so if a GT is not available it is possible it is being used on one of those three services and/or it has been permanently banned from XBL (or one of those
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