Mine has an interesting story. It was the name I used when I signed on to a BBS. When I did this I picked the name jester because it was cool at the time. But I knew that there were probably others with that name so I looked at a shoebox in my room and it contained some size 47 (european) shoes (it was also the time of DOS so 8 characters was good). So I was jester47. But the name had not really stuck. It wa not until I was at Virtual World in Dallas, when I wanted to have the handle of jester. The guy sighed and said "Well there are 46 other jesters, you will all either have to changte you name or name deul." That sounded like a pain in the butt, so I conveniently AGAIN went by jester47. About that time I started hanging around hackers, and it is tradition in those circles to have some sort of screen name. Out of convenience I chose jester47, and after that it stuck. So it has become my online/screen/computing name.
Aaron.