Search Engine Update Monitor (The Old Version)

This tool is discontinued. Data is not updated anymore.
Use the new version instead.

Monitored results (Google, Yahoo and MSN) for April, 2011: Graph mode ( Tabular mode )

SERPs changed positions graph for 2011-04

SERPs gone from top 10 graph for 2011-04

Other months data: 2006-09 2006-10 2006-11 2006-12 2007-01 2007-02 2007-03 2007-04 2007-05 2007-06 2007-07 2007-08 2007-09 2007-10 2007-11 2007-12 2008-01 2008-02 2008-03 2008-04 2008-05 2008-06 2008-07 2008-08 2008-09 2008-10 2008-11 2008-12 2009-01 2009-02 2009-03 2009-04 2009-05 2009-06 2009-07 2009-08 2009-09 2009-10 2009-11 2009-12 2010-01 2010-02 2010-03 2010-04 2010-05 2010-06 2010-07 2010-08 2010-09 2010-10 2010-11 2010-12 2011-01 2011-02 2011-03 2011-05

Switch to tabular mode

How does it work?

The main concept of this tool is simple yet effective. We have several hundred randomly chosen real user queries. Every day we make search requests for these queries in the three major search engines: Google, Yahoo, and MSN. Then we grab search results for the first 10 matches, and compare them against the data for the previous day.

What are the parameters?

We decided to calculate two parameters, which we call "Position changed" and "Gone from Top 10".

"Position changed" is the percent of pages that changed their place in SERPs compared to the previous day check.
"Gone from Top 10" is the parameter determining how many "yesterday" pages were gone "today" from the first 10 search results.

So if, on some day, for a particular search engine, we see a big rise in these parameters, we can suppose that significant changes in the algorithms of this search engine have been introduced.