Leaving aside the incredible capabilities of Zbrush v1.23 and THEN v1.51 !!! 
it gives me a little glow of amazement that someone had the foresight to have a website for user interaction and feedback about the software
not to mention incorporating the zscript capability so that users can trade demonstrations of how to do things
had better stop before my mind explodes – where did I leave that ephemerol? 
:holy ineffable moly:
