Bruce just complained about getting spam via GitHub following a PostgreSQL commit he made. I've had a look to see if there is a way to disable comments on a repo on GutHub, and I couldn't find it. Neither could Magnus. That's just awful. There's no reason that the Postgres mirror on GitHub should be getting comments. Nobody is going to look at them, anyway. They are nothing more than a spam vehicle. The good folks at GitHub should see to this urgently.
In fact, they used to also have a feature to turn off Pull Requests, I *think*. I'm pretty sure I enabled it for the postgres repo. But they took it away (or I'm mistaken and it didn't exist in the first plcae). I did contact support about that one as well, and just got the message that it's not something in their plans.<br />
I do try to keep track of the pull requests that came into the repository and redirected people to the mailinglists. Unfortunately, with all the spam lately they're much easier to miss...
The only thing I could find is to turn off email notifications of comments. There is two ways to do this via the Notification Center in Account Settings or at the bottom of the commit page there is a link to turn off notifications for that commit.