Lack of referrers on github is an annoyance
Github is a nice site, and I routinely monitor a couple of projects there.
I've also been using it to host a couple of my own projects, initially as an experiment, but since then because it has been useful to get followers and visibility.
I'm a little disappointed that you don't get to see more data though; today my sysadmin utilities repository received several new "stars". Given that these all occurred "an hour ago" it seems likely that they we referenced in a comment somewhere on LWN, hacker news, or similar.
Unfortunately I've no clue where that happened, or if it was a coincidence.
I expect this is more of a concern for those users who use github-pages, where having access to the access.logs would be more useful still. But ..