I had a problem with Github user pages for the past few months: It stopped building.<p>At first I was more than happy that for every commits, I can see the changes immediately, but after few days, it just keep showing the old build. I even started a fresh new accounts and setup a new user page, same thing happened. I tried many things to make it work, adding/removing CNAME, changing the page content, even waiting for few days, no luck. Tried to contact the Github team (via Twitter and the Contact Us page), no respond.<p>Now I am using my shared VPS to host a static site, waiting for some good news about build reliability, until then I wouldn't recommend using Github user pages.<p>Oh and by the way, if you set a CNAME, you wouldn't be able to access your project pages without adding it as a submodule into your user page.