Types of networks (peer-to-peer, LAN, commercial networks, Internet, intranet, extranet) (cables, fiber, electric lines, etc.)
Social networking sites such as Facebook and LinkedIn
SMS services such as Twitter
Other social web features, e.g., blogs, events listings, RSS feeds, etc.
Sharing of videos and pictures, e.g., YouTube, etc.
Social Web Interview, Gina Bianchini, CEO of Ning