GitHub is a site where developers can share code with one another. It is widely used by open source developers. Their user base is made up of geeks and people who want a lot of control over their mailbox.
Their email signup process reflects the sensibilities of their market, without being difficult to manage or understand.
GitHub signup
G
RSS - Posts
Thanks for the kind words, Laura! We’re excited to start pushing out more email (and hopefully email you want to receive).