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.
A podcast is a series of audio or video files that are periodically released and downloaded to a user's computer or mp3 device. Podcasts are usually delivered through subscription to an RSS feed or through a podcatcher, such as I-Tunes.
