2. ANSWER It has 140 characters of text that reports details of your home, social, or work life. Real-time communication. Uses cell phones or internet. Open or closed community forum – your choice! Social or business applications. Uploads to micro-blog services for distribution.
4. form of multimedia blogging that allows users to send brief text updates or micromedia such as photos or audio clips and publish them, either to be viewed by anyone or by a restricted group which can be chosen by the user. ...
5. will open this from web! http://www.technologyreview.com/computing/21227/