I have one of two theories about Mercenary:
1. He has no knowledge of how to end run-on sentences, or a proper grasp of grammar. Very unlikely considering he *claims* he is indeed 16-years old. He claims that he isn't the greatest in Grammar/Spelling, but that gives him no excuse to at least put in some dang periods or commas without making it an eyesore to read his dang posts.
2. He is what is known as a ''pecker'' or someone who has to look at his keyboard when he types. My friend has this same problem. Not wanting to waste time, he rarely ever adds any punctuation, and in doing so saving him time. It would be more convenient for Mercenary to just type the words rather than add in periods, commas, etc. except when necessary.
That is all.
I don't expect to get flamed, but.. nonetheless.