Market size: Large (> 10,000,000 people)
Investments required: Medium (< US$5,000,000)
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Today's technologies allow you identify instantly popularity of various search strings. More sophisticated technologies can identify the search strings that are not served perfectly by major search eginve. This information is sufficient to identify roughly and instanlty unmet demand in a given industry. Entrepreneurs and would-be entrepreneurs would be really happy to have this information at a reasonable price.