Social Networking Sites Search Engine
http://findasocialnetwork.com/search.php

Find Social Networking sites related to your interests, hobbies or vocation and connect with like-minded people. Search for Niche Social Networks offering targeted demographics that boost your marketing efforts. You can promote your own Social Network or Social Media site by submitting it FREE for inclusion. Discover new Communities, make new Friends and reconnect with old ones. Be updated about new Social Networks and discover a new interest. This has been added to the tools section of Research Resources Subject Tracer™ Information Blog. This has been added to Social Informatics Subject Tracer™ Information Blog.