It was three years back that I came across geek code. You answer a set of questions and then the site generates unreadable code. This code can be used as your signature. So in order to know more about your geek level, anyone can paste it in a decoder and see the actual meaning of the code. It was a craze once but died down now. Check out the sample code below.

—–BEGIN GEEK CODE BLOCK—–
Version: 3.1
GCS d++@ s: a C++$ UL*>$ P++ L+>$ !E– W+++$ N- o–? K-? w++$ !O— !M- !V PS@ !PE- Y PGP t 5 X R tv b DI D G e h r z
——END GEEK CODE BLOCK——

Now recently I came across blogger code (!) The idea is similar to geek code. Answer a set of questions and then generate a code. Following is a sample blogger code about me.

B1 D+++ T+ K+ S+ F+ I O+ X– E- L- C++ Y4 R+ W- P- M1 N- H

More Reading
Wikipedia on Geek Code
Blogger code 2.0