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BillyS - 11:08 pm on Oct 29, 2006 (gmt 0)
1. Google evaluates the content section of a page differently from the rest of the template. - True 2. Google is using human editorial input to affect the SERP - Myth 3. Using a dedicated IP address helps in ranking. Myth 4. Seeing any urls tagged as Supplemental Result means there is a problem. Half True 5. Having non W3C compliant code will harm your site - Myth 6. Having html errors will harm your site - Myth 7. Google Page Rank affects Traffic levels Directly - Fact
Okay, my 2 cents...
And I believe they do this to prevent duplicate content type issues.
Unless you're talking about spam. I just think it's easier to automate everything.
I think there are other signs of quality that go beyond IP addresses.
Even Matt Cutts says he wouldn't worry if there were some, but I think an indexing problem cropped up several months ago and resulted in some very real Supplemental problems.
That's just plain silly.
There are lots of sites - including big ones - that do not validate. Although some day this may make a difference as it becomes more popular to deliver content to more device types - but not a pc browser.
Although it's not quite as simple as PR anymore.