That leaves me more curious now. It contains the following:

> "Even if this is what you intend, if you publish your source code in a public repository on GitHub, you have accepted the Terms of Service which do allow other GitHub users some rights. Specifically, you allow others to view and fork your repository."

I wonder what it means, from the standpoint of using or modifying code within the copyright framework, to have this right to "fork your repository?"

It doesn't grant any right to use or modify the code, just to re-host it for viewing. Say someone puts up a repository they don't intend to, then deletes it. This right ensures they can't demand you delete it if you hit the fork button in time.

> I wonder what it means, from the standpoint of using or modifying code within the copyright framework, to have this right to "fork your repository?"

It's a conflict between the hosting T&S and the copyright of a derivative work. Just because Github says you can, doesn't mean you can.