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http://www.w3schools.com/
W3Schools is a web developer's portal, with tutorials and references relating to web development subjects, including HTML, XML, CSS, JavaScript, PHP, and SQL. W3Schools is free of charge, and is funded through text and display advertising.[1] The tutorials and references on the website and the related code are proprietary.[2] The site derives its name from the abbreviation for the World Wide Web; W3 is a numeronym of WWW.

http://www.ebay.com/

eBay Inc. is an American Internet company that manages eBay.com, an on-line auction and shopping website in which people and businesses buy and sell a broad variety of goods and services worldwide. Founded in 1995, eBay is one of the notable success stories of the dot-com bubble; it is now a multi-billion dollar business with operations localized in over thirty countries. eBay expanded from its original "set-time" auction format to include "Buy It Now" standard shopping; shopping by UPC, ISBN, or other kind of SKU (via Half.com); on-line classified advertisements (via Kijiji or eBay Classifieds); on-line event ticket trading (via StubHub); on-line money transfers (via PayPal) and other services