A lot of weird stuff is happening in the SERP's I monitor. Google is ranking pages of a website instead of the actual domain. For example if www.widgets.com was ranking for widgets, google is replacing that SERP with www.widgets.com/widgets
But then it will remove it...like it is doing some testing.
What is weird recently is I am seeing the most authority site in this niche now rank with the URL widgets.com/?PHPSESSIONID=asdasda34324
Now this is really alarming, why would google rank a site like this with a session id attached? This tells me that there is something wrong on googles side and I really hope they fix it soon.