If you were not aware.. tonight is the only time you get a chance to delete your web history from Google.com.

So, if you value your privacy, or you have visited sites you don't want to be made public, go to Google.com/history, sign in with your Gmail account or whatever email you have used to use Google docs, Gmail, blogger, YouTube, etc. and click the button to delete web history.

This is not the same as deleting your browser history. Web history is kept on Google's servers.. so they know what images you have looked at, which recipes, or anything else.. it will be public tomorrow.