Google's latest update the "Dewey" April 2008.
Well, you probably already know about the new Google update. While the last several updates don’t have a distinctive name, this past update which came roaring in during March and April wreaking havoc to all SEO’s deserves a name like a great storm- this one named “Dewey” after a code word used in Matt Cutt’s blog. Following is some of the information I have been able to collect on Dewey, hopefully giving SEO’s information that can be useful for their clients and websites. The Dewey update has ruined many spammy sites. 1) Old sites that have bought paid links suddenly dropped down Google's index around the end of February, early March. This seems to be particularly affecting thin affiliate sites. 2) Cache data has been inaccurate and appallingly unrefreshed even though the index reports that new content and links are working. Which is probably due to the delay with which an update gets rolled out accross the multiple data centers. 3) New sites take an excruciatingly long time be in...