Both of these are covered in the article. 1) That's why you should check multiple people's profiles. 2) That's why you should differentiate private from publi

Both of these are covered in the article. 1) That's why you should check multiple people's profiles. 2) That's why you should differentiate private from public repos, and again why you should check multiple people's profiles. Any individual person doesn't tell you much. If you find 10 people all coding on the weekend on private repos on the same dates, it's probably not for fun, it's probably crunch time.