Like in RL you will meet people you don't like and people who don't like you.
If you really need to blow some steam, why, there are plenty of the beastmen to kill ^^
Want the secret to a happier life? Ignore them. Don't waste time on them. Instead of thinking about them, think about your friends. Instead of ******** out them, go help your friends. You will have a happier life and be much more popular that way :)
Venting in public forums will just antagonize you the people who had a positive experience with the person(s) you are venting about. It usually make nothing to help your reputation. And some of those people might even want to make your life miserable which leads to more venting which leads to ... and so on, and so on.