Web 1.0 is a retronym referring to the first stage of the World Wide Web's evolution, from roughly 1991 to 2004. According to Cormode and Krishnamurthy, "content creators were few in Web 1.0 with the vast majority of users simply acting as consumers of content." Personal web pages were common, consisting mainly of static pages hosted on ISP-run web servers, or on free web hosting services such as Tripod and defunct GeoCities. With Web 2.0, it became common for average web users to have social-networking profiles (on sites such as Myspace and Facebook) and personal blogs (sites like Blogger, Tumblr and LiveJournal) through either a low-cost web hosting service or through a dedicated host. In general, content was generated dynamically, allowing readers to comment directly on pages in a way that was not common previously.