PageRank

• PageRank is currently one year old (or I should say stale) last update took the data snapshot from June 2010.
• When PageRank updates it never shows realtime PageRank snapshot but usually a few months back. Not sure why they do this – perhaps they spend some time equalising the data and solving the ‘dangling links’ in their random surfer model.
• The allocation of TBPR to pages is affected by content uniqueness as well as indexation/caching in addition to the usual cascading system (0.25).
• Many webmasters say they have a PageRank 5 or PageRank 4 website, when in fact calculation works on the page level – there is no such thing as site PageRank.
• Websites that sell links and make it obvious get a fake PR4 assigned algorithmically even if they are PR5, PR6, PR7 or PR8 this makes them less interesting to buyers.
• Some webmasters still buy links from fake PageRank websites (to get one 301 any page to another website and wait for a week or so, kill the 301 and voila! – Your URL shows their PR, though only temporarily).

PageRank News, Research & Testing:

• http://dejanseo.com.au/obstacles-in-experimental-testing-and-reverse-engineering-of-google-algorithm/
• http://dejanseo.com.au/everything-you-wanted-to-know-about-pagerank-but-were-afraid-to-ask/
• http://dejanseo.com.au/advanced-pagerank-analysis-by-dan-petrovic/
• http://dejanseo.com.au/the-end-of-google-pagerank/
• http://dejanseo.com.au/google-pagerank-update-january-2011/
• http://dejanseo.com.au/google-pagerank-update/
• http://dejanseo.com.au/pagerank-and-googles-200-ranking-signals/
• http://dejanseo.com.au/pagerank-update/