Web 2.0 aims to enhance creativity, information sharing, and collaboration among users through technologies like social networking sites, wikis, blogs, and folksonomies. It refers not to a new technical version but to changes in how software developers and users utilize the web. Social networking services use software to build online communities for people sharing interests to connect and share content like messages, files and blogs. Wikis allow anyone accessing them to contribute and modify content using simplified markup language and are often used for collaborative and community websites. Blogs are websites maintained by individuals with regular commentary, events or other content displayed in reverse chronological order, allowing readers to comment.