The simple dictionary definition of "Twitter" is "microblogging/social networking platform that places a 140- character limit on each individual post/tweet." However, describing Twitter thusly would fail to encapsulate the power of this new omnipresent medium. Twitter can be viewed at as a "marketing tool, feedreader, tracking device, communication tool & news breaker" all rolled into one. Or, Twitter can be seen as a collective life stream of a community of which you are a member. Read the full article
I think we're so much more aware of our own idiosyncrasies now, and feeding them to each other like this is creating this really odd global neurosis in increments of 140 characters.