Yea, just FYI: Of course, this is a generalized stat over a number of different industries and customer size, but the trends are what's important and the size of the delta.
The dart board analogy was a great idea. We've been gradually moving through each of the pricing strategies; I wish I'd seen this when I first started my business.
ie - make a list of the ~100 accounts who are of the highest value to you and rely heavily on that stream.
There are just so many interesting people out there (I follow ~750 accounts).