For up-to-date, comprehensive information on Disney World, follow http://www.twitter.com/disneytips. What is Twitter? Founded in 2006, Twitter is a free social networking and micro-blogging service: “Twitter is a service for friends, family, and co-workers to communicate and stay connected through the exchange of quick, frequent answers to one simple question: What are you doing?” Users send and read other users’ updates, which are known as “tweets” (text-based posts of up to 140 characters in length), from their computer or cell phone. Businesses use Twitter as both a promotional and communications tool: promote latest offers and specials, company news, answer questions, get feedback, etc. Twitter is currently the third most used social network (behind Facebook and MySpace). Twitter serves as a real-time search engine (http://search.twitter.com). Celebrities are taking over Twitter (Top 5: Ashton Kutcher, 2,543,771 followers; Ellen DeGeneres, 2,245,709 followers; Britney Spears, 2,172,198 followers; CNN Breaking News, 2,091,699 followers; and Oprah Winfrey, 1,649,835 followers).