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http://www.balsamiq.com/products/mockups
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http://www.skrenta.com/2007/05/14_rules_for_fast_web_pages_by_1.html
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http://www.alistapart.com/articles/holygrail
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http://www.adaptivepath.com/publications/essays/archives/000385.php
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http://www.ficml.org/jemimap/style/color/wheel.html