It says "Yep" for my handle... Are you hitting https://twitter.com/users/username_available?username=[X] https://twitter.com/users/username_available?username=

It says "Yep" for my handle... Are you hitting https://twitter.com/users/username_available?username=[X] https://twitter.com/users/username_available?username=[X]? I wonder if that private API is rate limited.