There are the questions you ask friends, family and close confidants. And then there are the questions you ask the Internet.

Search engines have long provided clues to the topics people look up. But now sites like Google and Bing are showing the precise questions that are most frequently asked, giving everyone a chance to peer virtually over one another’s shoulders at private curiosities. And they are revealing interesting patterns.

Frequently asked questions include: When will the world end? Is Neil Armstrong Muslim? Was George Washington gay?

The questions come from a feature that Google calls “autocomplete” and Microsoft calls “autosuggest.” These anticipate what you are likely to ask based on questions that other people have asked. Simply type a question starting with a word like “is” or “was,” and search engines will start filling in the rest.