A major Google page rank update has punished large scale of blog networks. Both Problogger and Blog Herald, two of the most popular blogs on the niche, announced that their PR dropped from 6 to 4. Earlier authority blogs sites confirmed that they have lost PR due to paid links. But Problogger and other blogs are not selling links.
Andy Beard suggested that the sites that got penalized were either selling links or exchanging them inside large blog networks.
Danny Sullivan wrote Official: Selling Paid Links Can Hurt Your PageRank Or Rankings On Google over two weeks ago.
These days so many blog websites online for strong Google pageranks of each website. This move by Google is good reason for many smaller blog sites.
Here is a list of some sites, including major publishers, who seem to have taken a hit overnight:
http://www.forbes.com/ PR7 to PR5
http://www.washingtonpost.com/ PR7 to PR5
http://www.washingtontimes.com/ PR6 to PR4
http://www.statcounter.com/ PR10 to PR6
http://www.autoblog.com/ PR6 to PR4
http://www.engadget.com/ PR7 to PR5
http://www.blogherald.com/ PR6 to PR4
http://www.problogger.net/ PR6 to PR4
http://www.copyblogger.com/ PR6 to PR4
http://www.searchengineguide.com/ PR7 to PR4
http://www.searchenginejournal.com/ PR7 to PR4
http://andybeard.eu/ PR5 to PR3
http://www.seroundtable.com/ PR7 to PR4
It is very interesting to see my blog pagerank which is not update yet. 😉