From ITWorld:
Step by step guide to clearing your search history via the EFF (Electronic Frontier Foundation): here.
Quote
Google announced in January it would unify most of its services under a single privacy policy and a single set of data-gathering tools that will arrange all Google's useful data on each of its customers in an efficient database, from which it is much simpler to sell that customer as a commodity to advertisers looking for specific patterns of behavior.
... if you're cautious at all about the amount of information Google has about you, uncertain at all how little evil Google will do with all the consolidated information or just a little woogy about anyone having big chunks of surveillance on you with a yen to sell it: go erase your Google history now.
...
Tomorrow, after all your odd searches, secret obsessions and kinky lunch reading is ensconced inside a special database, you won't be able to get to the data any more...
The history you have to delete is on Google.com. When you're signed in, Google keeps track of where you're going and what you're looking at, and stores that history on its server files.
Today only you can still delete that data, by following the instructions provided by EFF.
Step by step guide to clearing your search history via the EFF (Electronic Frontier Foundation): here.

















) if deleted search history data persists within their organization. If they have something in the TOS that allows them to do that, wow!... guess even the more paranoid among us are no match for their evil!







