Web 2.0 refers to a second generation of web-based services that became more accessible to all users by featuring fast, small applications that were easy to set up within a browser without downloading. Key characteristics of Web 2.0 included social networking between people, allowing users to own and control data on sites. Examples of Web 2.0 technologies are audio, video, blogs, wikis, social bookmarking, podcasts, RSS feeds, and mobile web access.