Linkster - thanks for your reply
My curiosity was aroused when, for comparitive purposes, I recently checked the backward links for the sites in my index page PR Table. What I found surprised me.
Ignoring the link to a one-page site of my own, there are 15 sites in the table, mostly PR5, with one PR4 and a PR6. Their backward links total anything from 15 to 404, and in every case my site (PR5, 130 backward links) appears at the top of the list.
I've read elsewhere that the listing is generally considered to be random - but not always, it would appear.
The top place for my site is held by a PR4 category page (pornstars) on a PR5 site.
Having said that, I can't pretend to know what it all means
