Commentary on Search Engine Optimization or how to write web pages that rank well in the Google Search Engine Result Pages (SERPs).
Amazon.com has 1.8+ million webpages each of which is automatically generated every time a new product is added. The only interesting, or fully developed, webpages to be found on Amazon.com are those for the same popular items being offered by off-line retailers. The long tail marketing tactics of Amazon.com apply only to their obscure hard to get items, most of whose corresponding webpages are quite undeveloped and empty. To try to apply the same long tail webpage development concept to the average site that contains only hand written content is an absurdity that perpetuates a fallacy of unreasonable expectations on the part of naive website operators.
Do you use artificial black-hat SEO gimmicks in order to achieve your search engine optimization objectives? Or, do you use content driven natural organic search engine optimization to achieves long lasting results?
PageRank only counts in the SERPs when all other things are equal. Or in others words, pagerank is almost never a consideration for ranking better in the SERPs.
Google favors keyword density over keyword repetition. So, there is never a need to write really big pages where a keyword is repeated hundreds of different times.
Search engine optimization is about optimizing what one has control over. Webmasters in most cases have no control over who links to them. In fact, obtaining links from other websites is about website promotion rather than SEO. Wasting time on trying to get external links by engaging in superstitious behavior is counter productive to good search engine optimization.
SEOs that make a W3C Validation claim are just trolls trying to scam you into spending your time making worthless busywork changes to your website. Or, worst yet trying to scam you into purchasing their expensive SEO services.
The supreme importance of PageRank simply is not so. Only when all other things are equal does the importance of pagerank ever come into play.
Did you know that ranking for non competitive keywords has more to do with the good SEO use of keywords, section headers, internal url structure and internal linking rather than with pagerank from external backward links?
Always give the readers of your website enough content to wet their appetites the first time around. Just be sure to leave those who read one of your webpages with a thirst to look around on your site for some more content.