As any college basketball fan worth his/her salt can tell you, there is a staggering amount of publicly available and analytically valid information available to people who want to better understand what they're watching. Even people who only tune in beginning on Selection Sunday have heard the name Ken Pomeroy, but comparative newcomers to the tempo-free stats scene Bart Torvik and Evan Miyakawa have been making headway in the public conscious of late.
I won't pretend to understand all the math behind each system, but I do know that they each have slightly different approaches to generating their numbers.