@raucao I'd say about a 2, from what I remember. I don't recall having any issues. Old links to repos will still work.

@raucao I recently changed my GitHub username, it was quite okish. But I don't use it heavily and have very little contributions. Pro tip: create a new account using your old username after changing it. So, all old repository names will work in the future (redirects). If someone else registers your old username and reuses repo names, the redirects break :)