Google trends seem to be somehow – not so reliable
Comparing the two swiss cities of Bern and Zürich (google.com/trends?q=bern%2C+z% ...) gives small villages as top cities and "rhaeto romance", an idiom spoken by about 40'000 people mostly as a second language as the top search language.
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google.com/intl/en/trends/abou ... See what "normalized" means.
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