Picture galleries available with chat, groups, and photo ratings.

An internet radio and music community website and social music platform. Uses a recommendation system known as "Audioscrobbler", to build a detailed profile of each user's musical taste.

A networking tool to find connections to recommended job candidates, industry experts and business partners. Allows registered users to maintain a list of contact details of people they know and trust in business.

Online collaboration tool for researchers that enables to share, connect and discuss researches.

Social networking and discussion site operated by Google.

A service for journals and blogs, that also offers privacy controls, photo storage, publishing tools, style templates, and online communities for many interests.

A social software platform providing a small-world network for professionals.

An online service to create, customize, and share a social network.

An international non-profit organization headquartered in Toronto, Ontario, Canada, that connects youth around the world, encouraging them to get involved in improving their local and global communities.

A web browser plugin that allows users to discover and rate webpages, photos, videos, and news articles.