Changing the capitalization of a users' name will change their rating to 50%. GitHire has no contact information, but since it was rather popular here I imagine the founders might stumble upon this here. After about 10 minutes, it seems the change in rating to 50% is reflected on the users' normal uri as well.Examples of people in the 1% who became 50%:
Linus Torvalds: http://i.imgur.com/SIE8o.png
Paul Irish: http://i.imgur.com/z5Orl.png
Ryan Dahl: http://i.imgur.com/1ooTY.png
Discovered this when I went from the top 2% to the top 50%.