What's the stupidest hack you've ever encountered?
My cellphone number was once banned from using a service, but not if I enter the country code in front of it.
@r3bl lol, did you also try adding a few spaces?
A single-user instance for @firstname.lastname@example.org.
I may or may not be interested in creating a few bots that you can follow, but the registration on this instance will remain permanently closed.