Leosghost - 3:26 pm on Mar 10, 2013 (gmt 0)
Being logged in to your Google account certainly affects results on a session basis, but I haven't noticed anything surviving cache clearance, so imagine anything stored is only on the local end.
I have 4 machines permanently connected from behind this static IP..each gets ads and serps based upon what it and the others have been doing..
This post is coming from a machine that was rebuilt, I just kept the empty tower ( new Mobo, PS, CPU, GPU, RAM, HDs) in January of this year..( Mobo on the old one died, and I changed it from dual boot mint7/win7 ulti ..to full fresh install mint13 with mate only ) ..Google still send me ads and adsense and personalise my serps, on this machine based on things that the old machine surfed/saw/clicked on/and purchases I made with it etc..
"It" certainly isn't "all stored locally"..;)