All trolling aside please.
There is absolutely no purpose of having a name that is so damn log that we can't even read what you he/she is typing, and I am personally tired of having to open the chat log everytime he/she speaks.
The only purpose to have a name that long is to troll and ruin the experience.
I haven't done an official character count, but there should be a limit of 35-40 characters. That is still plenty long to fit all the silly names and phrases in without be a burden to the poor chat box that doesn't feature word wrap or having your name cut off on the list to the bottom right becuase there must be room for the vote and action buttons.