Social networking is the connection of people and organizations that share a common interest or activity.
Blogs are personal news pages that are date or time-stamped and arranged with the most recent items shown first.
A microblog is short status update.
Webcast is streaming technology for live broadcast of audio and video.
Podcast are audio and video files that can be downloaded to your computer or media player.
Wiki is a specially designed Web site that allows visitors to edit the contents it supports collaborative writing.