Errr, I've been banning like a fiend on Recrude. Done at least a dozen or so in the past 24hrs. I spam a warning from Console as soon as I join--something along the lines of Do Not curse, I will ban, no warnings. etc etc.
Initially, I agreed with you folks advocating warning people first, but the reality is that then the admins have to sit there and debate with people, or they leave and rejoin before you can ban them and AFTER spamming FU for several seconds. It ruins the fun for everyone and it definately means that admins end up typing more than playing.
Ban first, take the hardline, everyone will respect that or leave. Fatty has it right as well, there are PLENTY of more ppl out there.