In the interest of full disclosure--as many have already assumed--the M is my first initial, for Matt. Arnold is, well, my last name. Yes, I have two first names. Yes, my mother jokingly considered naming me "Benedict." No, I'm not related to Tom or Schwartzenegger for that matter.
Why do I feel the need to mention? Well, I use marnold as my user name on most forums (except gaming ones--there I'm A.T. Hun) so I can be ID'd across forums. For whatever reason, it still seems odd to be addressed as marnold. This way at least you know I do have a bona fide name :)
In case anyone wonders why I had to work, it comes with the territory. I am a clergyman by trade. Lutheran to be precise. WELS to be even more precise. It always floors people that someone who is so religiously and politically conservative loves heavy metal and brews his own beer . . . to say nothing of having George Lynch as an avatar :)