Web 2.0 App Development is about emerging Internet-based applications to facilitate and accentuate on line association, by offering a cost-effective way to promote knowledge sharing and minimize support costs. It is considered as the second generation of web-based communities which aims at enhancing information sharing and collaboration amongst web users in the World Wide Web.
Twitter applications help in managing tweets, know who to follow
Social networking allows people to express their individuality as well
Facebook applications are a new way to interact with the