Re: Dear signature spammers... (or account farmers.) -- Read the STATS inside.
Proxies and VPNs (especially public and free ones) have a high chance of being marked and can earn you a unit of evil for your troubles.
I wouldn't call it quite 'high'.Just click report and you will ban? Sometimes many were reported but they still can spam. 
There are only two active staff members that can issue bans right now: Cyrus and hilariousandco. It's solely up to them whether someone will be banned or not.