You know what I absolutely hate? People who don't know the difference between newbs and n00bs. To clarify, newbs are people who are new to a place or site, and they mostly act in a decent manner. N00bs on the other hand can be just about anybody, and they act in a manner very unbecoming of the human race as a whole.

I dislike n00bs, but I can deal with them. People who don't know the difference really piss me off. Especially when they immediately rail on new people assuming that they are going to be arrogant or otherwise disrespectful n00bs. I believe that, when someone does that, they are the true n00bs, because they cannot, or will not, tell the difference.