A World of Warcraft (WoW) database site with items, quests, forums, news, profiles, quest-tracking, a talent calculator, and more.
Wikipedia (TheFreeDictionary.com mirror)
Wikipedia is a Web-based, free-content encyclopedia written collaboratively by volunteers and sponsored by the non-profit Wikimedia Foundation. It contains entries both on traditional encyclopedic topics and on almanac, gazetteer, and current events topics.