Nelson's Weblog: googleSearchHistory
Did you know that for years Google has been keeping a record of every search you do? And did you know they're now associating your search history with your Google login for other services like Gmail, Calendar, and the like? Surprise! It's Search History. And now it's being used to personalize your search results.
I don't like Google aggregating this data about me. It is possible to opt out. You can turn off search history recording in the settings page. You can also edit your history, including removing it entirely.
Nothing to fear! Of course! Nothing to fear!