Mr. DOUGLAS: This is the dirty little secret in the underground information business.

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The wild winter weather is bringing attention to the climate change issue, and Weather Underground wants to provide valuable information to its readers.

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Critics of the proposed law - named after Sarah Payne, eight, who was murdered by paedophile Roy Whiting in 2000 - say releasing the information could drive offenders underground, making it more difficult to track them.

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Furthermore, the participants of seminar gave practical suggestions for improvement of scientific-research and educational potential of investigation and usage of underground water with an adoption of information and communication technologies, including geographical information system and present-day simulation methods and forecasting approach.

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Owners of botnets also scour infected machines for information that can be sold on the underground auction sites and markets found online.

BBC: Two million US PCs recruited to botnets

Despite narrowly escaping capture and suffering a leg wound during a shootout with the Gestapo, he provided key information on an oil refinery and an underground V-1 rocket factory.

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Two unnamed "people familiar with the matter" told Bloomberg that the hackers appeared to be looking for research, intellectual property or other private information that they can sell on the underground market.

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According to blogger Brian Krebs, a group of hackers have eviscerated an underground hacker forum by posting database dumps of their private information and communication, including email addresses and private messages sent between users.

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Information security firm RSA recently took a stroll through the underground market for personal details.

FORBES: The Black Market Price Of Your Personal Info