Help blocking Tor from my site please.

I want to block tor users from my site,, I found this https://www.torproject.org/docs/faq-abuse.html.en#Bans but not sure how or what to do or even where to begin,, can someone help please?

I use TOR. Simply because I like to be anonymous.

https://www.torproject.org/docs/faq-abuse.html.en#Bans

I have problems with them too, because more and more spammers coming from there right now. I developed a mod to block them by querying the tor network for the IP. It works really well but i am still unsure wheres the best place to block them on my site.

Currently i only block submitting the join form without any error. They just cannot submit the form. Any suggestion whats more user friendly?

Probably a message in red on the join form, or a JavaScript alert that the user's IP address is blacklisted.  Maybe add in a cute picture of a sloth, too.

I also thought about this but right now I just use dolphins default message on a new page that the users IP has being blocked and he cannot access join.php