Web 2.0 is the web standard used today. Unlike the first version, Web 2.0 allows us to interact with other users of the Internet. Instead of only retrieving information provided by the administrator of a website, we can communicate with others. As opposed to the Internet being a one-way resource for the users, the Internet became a mere tool for users to communicate with each other. With it came the birth of social networking sites (facebook, MySpace, linked-in, etc.), social bookmarking sites (dig, delicious, etc.) and social shopping sites (kaboodle.com, thisnext.com, etc.).
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Web 1.0, Web 2.0
Client-server, Peer to peer
Home pages, Blogs
Advertising, Word of mouth
Services sold over the Web, web services
Web forms, Web applications
Screen scraping, APIs
Hardware costs, Bandwidth costs
Internet Explorer, Firefox