Possible Duplicate:Hidden features of Google In what way that differs from its main purpose do you use Google in your everyday life? For example, to check if I use a word combination properly I enclose it in quotes and check the number of matches. Or if you have some signature with name and surname and you don't know where is what you can use the search engine by comparing the number of results for each part of the signature (I know that it cannot always work, but generally should be ok).
Interesting ways to use Google
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