BillyS - 5:08 pm on May 27, 2010 (gmt 0)
mantucket - Good article, great insights. I did some year over year comparisons and I've comfirmed our traffic reduction is seasonal. When making a direct comparison in early April versus mid May we're actually seeing an increase in traffic.
For example, April 2009 versus April 2010 we saw a average of a 68% increase in traffic (day by day comparison over two weeks in the month). When we do the same analysis for May 2009 versus May 2010 we see an average of an 87% increase. So even though our traffic is lower (April 2010 to May 2010), we saw an even larger April to May decrease this same time last year.
It sound like this update is meant to hurt larger sites that have lower value content. In other words, the type of site that is put up for the sole reason of getting traffic from everywhere.
This change should hurt sites that have a lot of superficial and duplicate content sprinkled with all the right terms. For example, I often see the results from another search engine ranking well in Google for long tail terms. I would think this type of result was a target of this update.