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With the advent of Web 2.0, libraries began not only developing innovative technology, but also new economic paradigms for library services. The present economic situation for libraries is unsustainable. Libraries, as a practical matter, cannot pay attention to everything, to every node, to every leaf on the tree of knowledge. Through creation of multiple points of interaction with users the result is an increase in the level of attention paid by the user compared to the static nature of Web 1.0 technologies which were mostly passive in regards to the users.Web 2.0 also represents an attempt to deal with the issue of scarcity of library resources by making the users partners with the librarians in the creation and development of content.