A free, public, international social network offering custom privacy tools, photo sharing, blog publishing, interest groups, messaging and chat, streaming music and video, and social applications.

Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.

A global social network that emphasizes friendship and the discovery of new people. Search for old friends and classmates, stay in touch with friends, share photos and videos. Also in Simplified and Traditional Chinese, and in Spanish.

Fan clubs covering a variety of topics with video, images, forums, bookmarking and polls.

This social media site is focused on books. Members can build virtual bookshelves, discover, rate and discuss books, and participate in online groups.

Features include a weblog service, photo albums and forums. Users may download skins and setups for the Opera browser.

Find, connect and keep in touch with friends and acquaintances, post photographs, announcements, and biographies, read community message boards and be informed of upcoming reunions. Free and paid memberships.

Users create an account and list goals or hopes which are then connected to other people's goals.

Users can create a microblog and connect friends, posting from the web, by SMS, or from desktop clients.

A community of interconnected photo diaries and blogs.