Jim,
Never heard of that myth. I run my pump the least amount I can to save money. I'm a research chemist at a water treatment plant, so I'm up to speed on water chemistry/disinfection.
Mainly I'm curious about my flow rate and pump efficiency and like gadgets, so hooking up a flow meter sounds fun and interesting. I'd like to plot RPM vs flow rate and also flow rate vs. wattage just to see what it looks like.