IMHO, they do not ban enough users. Some still post there that are banned here.
how long are you on the internet?
if someone is banned from a website he has a new account in 2 minutes.
they should learn to live with criticism.
I started using the Internet in about 1985. Long before there was a world wide web. , I There wasn't much but news groups and Gopher then, and we used Unix Commands on our Vax.
When the world wide web became available in 1992, I was a early adopter.
Occasionally, someone who is banned gets another IP, user name, and e-mail and starts posting again, however, a range of IP's can be banned as well.
I do not agree that a web site should just ignore abusers, spammers, etc because they occasionally come back with a new account.