Although mine's pretty simple, rad4Christ means radical for Christ.
Basically I had this name for a long time, named after a teen center I was developing to open that never manifested. The Slogan of the center, was RUR4C? Are you radical for Christ. Basically meant are you willing to do anything to share the message of Jesus Christ with the world. When I started playing online, my nick was jesuspunk, but it started being used, to my annoyance. so I settled on rad4Christ. I wanted to make sure, that, although I'll never cram my beliefs down your throat, you should know where I stad, and that my beliefs are the most important thing in my life, and affects every aspect of it.
The [mmi] tag is my little invention too. I began playing CS back in the EARLY beta, like, 1.0 beta. IMHO, it was much better then. When you died, and the round ended, your guns stayed on the ground for thirty seconds, so instead of buying new ones, we'd all race to get ones laying on the ground and have a fire fight in the midst... ahh, those were the days... Well, I got to be pretty good at it, and clans began to ask me to join. I never liked clans, so I came up with a "clan" tag to get ppl to leave me alone by thinking I was already in one. [mmi] stands for Me, Myself, and I. Pretty simple.