Thank you for this important info. About OK for understanding the formula, is the snippet in Python? Whatever language, the way the formula is created is totally out-of-reach for my brain. Just for fun, sorry for your time but is it possible to find out the raw reputation growth this way? 30 is 20x10 better so 200+(25X9)-9? or rather (200+25)9-9? would give back a raw Vest? And so on: 40 is 30x10, 300+(25x9)-9? or (300+25)9-9? and 50 is 40x10 so 400+(25x9)-9? or 425x9-9..? Simplistic but Just trying! :-)