Activity feeds are now active. Three, in particular: events for you, events from you, and public events from you.
The private feeds are protected with HTTP authentication. You need to use your GitHub username (or email address) and password to access them.
In case it’s not clear: events ‘for you’ are events that pertain to a repository you are watching or a user you are following. If you are following me and I edit a wiki, you will see that. If I am watching your repository and you push a change, I will see that.
It’s a great way to keep tabs on what’s going on with projects you care about.