---- 3: Google Updates and SERP Changes - May 2010
tedster - 8:33 pm on May 31, 2010 (gmt 0)
do you think the May 17 is an adjustment completing the MayDay change?
I can't rule that out, but I don't have enough data to make that conclusion, either. May 17 seems to have affected a much smaller number of sites.
a vast number of our pages (that used to rank and get traffic) have disappeared from the index altogether
Then that's not the same as an algorithm change. The Mayday change was aimed at algorithmic ranking for long-tail results. Matt Cutts also emphasized that Mayday was an algorithm change and not an indexing change.
There have been ongoing reports here of losing pages in the index - and then some members reported seeing a gradual reappearance for some pages that were dropped. This sounds like a different process at Google, and a somewhat mysterious one at that.
Can you see a pattern between pages that were dropped from the Google index and pages that were retained?
[edited by: tedster at 11:08 pm (utc) on May 31, 2010]