So I was doing some ranking research on certain keywords the other day. To my surprise my previous end of April drop was gone... I was back to the top of the rankings!
Next thing I know the same keyword has me dropped again... baffled I tried to figure out what was going on and realized if I am logged in our out of my Google account I get different search results.
Anyone else experience this or have an answer? I can never remember this happening before so I am interested to understand whats going on. Are they caching results? Are results tailored if logged in?