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deadsea - 5:18 pm on Oct 16, 2012 (gmt 0)
On the pagerank front, I had long suspected that they started discounting high pagerank links. From this quote: "Not only this but take PR for example, getting a link from a high PR page used to always be valuable, today it’s more the relevance of the site’s theme in regards to yours, relevance is the new PR" it sounds like a high page rank link might be great if the linking site is on-topic.
"if you want to please Google with your SEO, then forget about SEO" is horrible advice. If I were not worried about SEO, I wouldn't let robots crawl my site. I wouldn't write page titles that users barely see. I would a lot more flash and ajax to make the presentation flashier. The advice to be passionate and create good content is good, but you need to worry about search engines if you want visitors.
"We use signs like ... coding style to determine ownership clusters. ... Search engines always used this data in their fight against spam" Coding style is pretty advanced stuff. If you are trying to hide the fact that you own a site, I guess it might be worth using a standard CMS system (different than the one you usually use).