This article deals with the history and definitions of social networking. The properties of social networking are discussed, which aims for improving communication and contacts with others, who are not known/seen physically. The characteristics like persistency, searchability, replicability and invisible audiences are discussed in detail. Different types of social networking available in different region/countries are outlined with discussions on some of the social networks. Applications of social networks vary from Government, business, medical, dating, educational and library, which are given with few examples. The access to resources in library context is emphasized more in detail, with the technological support for social networking like increasing customer satisfaction, allowing customers to connect with experts, understand and visualize the communication path and sharing the knowledge with others. Some of the implications are enumerated in detail, with the consequences of social networking also. It has concluded that in future if the libraries adopt social networking techniques form the users, it would be more beneficial and better interaction with the users will be for providing the services from the library environment.
