And, finally, the coup-de-grace: most people’s browsers display a unique fingerprint (browser + add-ons + installed fonts + screen size + language setting + various other settings), that is, most of us can be identified by our browser alone (no IP address needed!).
More (“check your own browser” and link to the research paper) here:
panopticlick.eff.org/index.php? … log&js=yes
Google has all of us on a leash. 
Some delicious information that i hadn’t seen before (haven’t been following spy topics lately - stories of that sort don’t surprise me the least, since i’ve had a tin foil hat since i graduated from highschool and developed the habit of greeting the unknown people who i knew were listening in whenever i made overseas phone calls).
“GCHQ’s Byond Top Secret Middle Eastern Internet Spy Base” (June 2014)
theregister.co.uk/2014/06/03 … t_spy_base