CHAPTER 9Chapter OutlineLearning ObjectivesChapter Opening Case: From Social Networks to Social Commerce9.1 Web 2.0 Underlying TechnologiesMost Common Web 2.0 MemesWeb 2.0 Underlying TechnologiesGeo-Tagging9.2 Web 2.0 ApplicationsBlogs and WikisNetcastingWeb 2.0 MediaPrinting-on-DemandCrowdsourcing Web Sites9.3 Categories of Web 2.0 SitesSocial Networking SitesTwitter and the Iranian ElectionAggregatorsChapter Closing CaseCHAPTER 9Web 2.0 and Social NetworksChapter Outline9.1 Web 2.0 Underlying Technologies9.2 Web 2.0 Applications9.3 Categories of Web 2.0 SitesLearning Objectives1. Describe the differences between Web 1.0 and Web 2.0, and explain the benefits of three information technologies used by Web 2.0.2. Identify five prominent Web 2.0 applications, and provide at least one example of how each can be utilized in a business setting.3. Discuss the three categories of Web 2.0 sites, and provide at least one example of how each can improve business efficiency and profitability.Chapter Opening Case: From Social Networks to Social CommerceSource: VLADGRIN/Shutterstock9.1 Web 2.0 Underlying Technologies© Matthias Pahl/Age Fotostock America, Inc.Most Common Web 2.0 Memes© Marek Uliasz/Age Fotostock America, Inc.Web 2.0 Underlying Technologies AJAX Tagging Really Simple Syndication (RSS)Geo-Tagging© Adam Radosavljevic/Age Fotostock America, Inc.9.2 Web 2.0 ApplicationsBlogs and BloggingWikisNetcastingWeb 2.0 MediaPrinting-on-DemandCrowdsourcingBlogs and Wikis Blogs, Blogging, and the BlogosphereWikis used in business© Panther Media/Age Fotostock America, Inc.NetcastingPodcasts and VideocastsSource: Lane Oatey/Getty Images, Inc.Web 2.0 MediaVideoMusicPhotographsSource: Lane Oatey/Getty Images, Inc.Printing-on-Demand© Kitch Bain/Age Fotostock America, Inc.Crowdsourcing Web SitesSource: Scott Maxwell/ LuMaxArt/Shutterstock9.3 Categories of Web 2.0 SitesSocial Networking SitesAggregatorsMashupsSocial Networking SitesFor a list of social networking sites:Check out this BusinessWeek slideshow© Marina Bordjieva/Age Fotostock America, Inc.Twitter and the Iranian ElectionProtesters’ only link to the outside world: TwitterAftermath of the Iranian election in 2009© Pankaj & Insy Shah/Age Fotostock America, Inc.Aggregators•Bloglines•Digg•Simply hired•TechnoratiChapter Closing Case •The Business Problem•The IT Solutions•The