learning Data harvesting [closed]

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I want to build a website that will harvest data from: *facebook status of my friends *other website

Unfortenatly, I don't know how to harvest data. Can someone recommend of a book\tutorial ? How to approch this field?

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The phrase you're looking for is Web scraping.

Unfortunately, copying data from Facebook and other websites and re-publishing it has a number of legal and ethical issues, which are probably more significant than the technical hurdles.

If you intend to use C# (I'm guessing from your tag), the HTML Agility Pack library will be useful.