One thing that wasn't mentioned as an advantage of a mailing list is the index a mail client provides for discussion. This allows one to easily see which messages have been read, who has responded to whom and the ability to jump to a particular message in the discussion.
Github, on the other hand, mixes the overall diff with comments, so if there are a lot of comments, and the diff is large, then it requires a lot of scrolling to find a given comment. It also takes some time to find a given comment and see if it someone has responded to it.
Comments
One thing that wasn't mentioned as an advantage of a mailing list is the index a mail client provides for discussion. This allows one to easily see which messages have been read, who has responded to whom and the ability to jump to a particular message in the discussion.
Github, on the other hand, mixes the overall diff with comments, so if there are a lot of comments, and the diff is large, then it requires a lot of scrolling to find a given comment. It also takes some time to find a given comment and see if it someone has responded to it.