Web 2.0 refers to second-generation web-based communities and services that facilitate collaboration and sharing between users through social networking sites, wikis, blogs, and other tools. It represents an important shift in how digital information is created, shared, stored, distributed, and manipulated. Web 2.0 tools are highly social, encourage users to interact with and manipulate content in new ways, and push computing power onto the internet rather than desktops. Examples of Web 2.0 tools include wikis, blogs, YouTube, Flickr, and social networking sites. These tools are increasingly being used for new forms of publishing and research collaboration.