Reading by numbers...

I wonder what the numbers mean.

I'm an Amazon Top 1000 Reviewer! It sounds great, but I'm really not sure how I got there or how long I'll stay--or even how to stay. Rumors abound about reviews by authors disappearing.  If my reviews vanish willI stop being in the Top 1000? Or does being a Top 1000 Reviewer help my reviews stay where they are?
Of course, being a reviewer of any sort on Amazon involves numbers. I can't just post a review on its own without adding some kind of rating, and I...