A social network service provides access to an online community of friends, business associates or people with whom you share a common interest. Examples of popular social networking websites include Flickr (share your photos), Facebook, Goodreads (review your favorite books), MySpace, LinkedIn (professional networking), and Twitter.
Vodcasting is the online delivery of a video clip through an RSS feed. Although podcast usually refers to digital media files of both audio and video content, the term vodcast is used to distinguish it from files containing only audio.
