An average of just over 50% is pretty damn good. You're not compressing something as repeatable as text after all. I think these compressors will start to play very big roles as broadband speeds increase and as recording media increases in density. I've already seen quotes of 200GB for 2.5" drives and over 400GB for 3.5" desktop drives for 2003. Transfer speeds and interfaces are going to start to become a big bottle neck at that point. :)

Bruno