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Recreation > Drugs > Dissociatives > DXM
The bottom 3 sites have been long dead. They have since been removed from the DMOZ, but Google hasn't updated with the latest DMOZ data yet. If you check all the sites that are still there with the toolbar, only the #1 listed site has a PR of 6, and all the rest have a PR of 5. Yet the directory is listing the top 3 sites as having the same PR, I presume because the the directory uses a different scaling system. IIRC I remember reading once the directory PR ranges from 0 to 7. The last 4 sites listed with the same directory PR obviously aren't being sorted alphabetically. I can only assume that these are being listed in terms of ranking by true, non-fractional PR. And, I am very familiar with all these sites, and what sort of backlinks they have. All those toolbar PR5 sites are ranked in the order I'd expect they would be if we actually had access to the true, non-fractional PR. The sites higher up have more backlinks, and higher PR ones, than the ones listed lower.
Thus, if someone has a site listed in the DMOZ along with competitors that have the same PR, you can use the directory to figure out which of you actually has the highest fractional PR.
If the directory shows PR 7, your listed site hasn't get PR 6. The rule Referer-PR - 1 isn't really exact.
A little example: If a site has PR6 there must be a PR7 site which links to. If a site has PR7 there must be a PR8 site which links to. For PR8 and PR9 the same. But what is about PR10. Where are the PR11 pages, which has installed a link to the PR10 page?
The "PR-1" Rule is just roughly. Google uses a complex way to calculate your PageRank. That's what I've experienced.
regards,
tino