Google is not allowed on three out of four of my desktop/laptop machines (and certainly not on my servers) other than as googlebot on public web sites.
Having said that, today I had to enable googleapsis in NoScript so that my wife could view a missed ITV (UK) TV program. That really annoyed me! I am paranoid enough to believe G is logging at least some of the info from that access.
What they do with the information I obviously can't say but I would believe that were I foolish snough to use G's SERPS or gmail/etc I could end up being force-fed related adverts.