Summary: Deleting Google history takes a few steps, depending on what Google history you mean. Here are step-by-step instructions for deleting Google history.

I want to delete the items that show up automatically when I search for something using Google's toolbar. I'll admit it, there are some terms there that I'd not want others to see. How do I clear that?

That's actually a composite question from several related questions that I get several times each day. People search for things on Google, and then they don't want the evidence of what they searched for to remain.

Fair enough.

But there's an amazing amount of confusion. Some say "Google toolbar" and mean "Google toolbar". Others say "Google toolbar" and mean ... well, apparently they mean something else.

And naturally the difference is important in answering the question.
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