There so many things you can apply this to within your business to help it run more efficiently.
We try to look at which products in the shop deliver the most profit. If you know that say 30% of your product range is delivering 80% of your profits then that leads you to question why bother with the remaining 70% of your range? You are spending time and effort on these profits yet they deliver very little.
There are some excellent books to be had on how to apply the 80/20 rule to business and also to your personal life written by Richard Koch.
Honestly, you people take yourselves far too seriously!
I make a gag about gays, and suddenly I'm a homophobic bigot? Honestly, it beggars belief! It's this sort of PC nonsense that makes the UK a ridiculous place at times!