It is an undisputed fact that Google is the BIG Brother of today’s World Wide Web. You will wonder to know how much personal information about you is possessed by Google with its free and useful services like Gmail, Orkut, Google Search, FeedBurner and other similar services.
If you just want to take a look, Log in to your Google Account and click here. You will be taken to a page, where all the web searches you have made are chronologically stored in Google Web Search History.
If this fact that Google is storing all your private information bother you, then you may consider to stop Google from storing it and thus, can protect your online privacy and security, just by Clicking on the Pause link in the left hand side menu on the same page.
But, if you think that this is not a big concern for you, then just leave it as it is, and enjoy.