Try having a generic username on there where everybody @s you as a shorthand for the real person's username and you end up getting notified. Or added to random repos and removed minutes later, but still getting the notification. :)
There was a thread about six months ago mentioned that they get @'ed constantly by mistake. They had a funny attitude towards it, though. They said they always enjoy getting to see what everyone else is working on and didn't mind the notifications.
If anyone remembers what I'm talking about, let me know because now I'm so curious about this username I can't remember.
Thanks so much. That had been gnawing at me.