Ask HN: Google Docs Spam?

Has anyone else here started to see more Google Docs spam recently (as in, in the last month or so)? I hadn't seen this spam vector before, but suddenly I'm seeing my account get @mentioned on docs that are clearly spam. I've tried to report through official channels but it doesn't seem to help, either the spammers are rotating accounts, or else the "report" button is not monitored.

(Also, it's just awful that they make you click through to the spam document before you can report it. Why don't I have an option to report spam in the notification email?)

I don't want to turn off my notifications outright but I'm not sure what else to do at this point.