I'm not quite sure what this 'caches' (sorry bit of a nube!)..
Does it cache templates such as postbit, threadbit etc etc? Or does it cache whole pages?
In simple terms how does this save resources or speed things up?
What is the best thing to look out for once it's installed to 'see' if it's having any impact? Speed when server loads are up or speed in general?
Sorry for the newbie-type questions - and thanks for what seems like will be a very useful hack