• In some social networking Web sites, such as
Second Life, users assume an imaginary identity
and interact with other users in a role-playing
type of environment.
• A media sharing Web site is a specific type of
online social network that enables members to
share media such as photos, music, and videos.
• Flickr, Fotki, and Webshots are popular photo
sharing communities; PixelFish and YouTube are
popular video sharing communities.