I have a big shopping portal with thousands of sites (product sites).
I watch the following since the update today:
The positions have not worsened but Google shows less relevant sites of my domain (which have the keyword one time) at the same position!
The product sitesm optimized on the keyword, don't come any more.
The sides which appear, are so irrelevant, they might never appear on this ranking-place.
Also the query
keyword site: meinedomain.de
shows at the first positions only less relevant sites and the relevant sites after them......
Does anybody have similar problems?
Is there a declaration about this phenomenon?