I like that one also, Papaw. I think it really fits Brian.
I couldn't tell much about the guys skills, considering that his Myspace page is about the rattiest, ugliest form of webpage I've seen in a while. That site definitely looks bush-league in my opinion. I couldn't navigate it to find pics of any of his work. The embedded media player kept me from scrolling sideways. I didn't find any links to any other page where I could see his work.
You (Brian), on the other hand, take tasteful pictures of your creations and post them here and on facebook so we all can see your talent. You don't brag about how long you have been smithing, you just does it, and do it well.
I say keep "Thunder Forge" and to heck with everyone else. I wouldn't worry about changing it unless it really bothers you.
You could even add your full name plus "Proprietor" or "Owner" under your forge name, then you will be sure to not be mistaken as any other forge with the same name.