One possible scenario: GitHub may have been young, foolish, and naive, and originally registered their domain with GoDaddy. Then they woke up and realized what

One possible scenario: GitHub may have been young, foolish, and naive, and originally registered their domain with GoDaddy. Then they woke up and realized what a STEAMING PILE GoDaddy is as a company, and corrected the error of their ways for their other domains. :) Just my random $.02 :)