Web 2.0 refers to a new generation of internet-based services that emphasize online collaboration and sharing among users. It allows people to interact and collaborate with each other in a social media dialogue as creators of user-generated content in a virtual community, in contrast to websites where people are limited to the passive viewing of content. Common tools of Web 2.0 include wikis, social networking sites, blogs, image sharing sites, tags, podcasts, RSS feeds, widgets, and social bookmarks. To stay current, professionals should read news articles, students, teachers, and experts using RSS feed readers to efficiently gather information from various sources.