"In order to keep our performance ratings consistent, we set up the following system: An escort provider is only eligible to earn up to a 7, unless she is willing to perform one or some of the following during a session: Kisses With Tongue, Bare-Back Blow Job, Really Bi, and Anal Sex. For each of these services that are offered, her potential max score is raised by one point, with 10 as an absolute maximum."

It's simple math. There are four services that can each earn a lady an additional point above a "7". She only has to offer any three to qualify for a "10". The numbers either add up or they don't

Performance can be subjective too. Think of it as a third category,along with looks, menu,and the subjective category, including chemistry, enthusasm, and other intangibles. I love to cim,but my atf only did cbj.  Nonetheless she was such good company (and a 10 for looks) that I always felt I was with a girfriend. Of course  perhaps I've just reached an age where I can't make use of every acronym in one session, but sometimes objectivity in anything can be overrated.  Maybe I'm changing the subject a bit with that comment.