Yes, and not just on the internet. I have actually been in every single one of the examples I gave above - Paul/Paula and the women-use-sex arguments were both in person.

I have the unfortunate habit of pointing out Logical Fallacies during arguments, which make people who don't understand them want to use them back at me to show me how it feels to be accused of such. Except, because they don't understand them, their accusations are wrong.