To Twit or not to Twit

Twitter on a basic level, takes the (apparently) most annoying part of facebook and allows people to share just that part. While this rather recent phenomenon could seem rather pointless, and is indeed ridiculed by some in media, others (such as Mr Stephen Fry) can see the potential in it.
The ability to share one's mundane thoughts, might appear pointless, but what if one was to use it for other purposes? As a writer, networking and getting your name known is something of most importance. Indeed in her recent article, Jill Priluck indicates that in these times of crunching credit, using digital resources is rather essential.
Twitter as a way of becoming known, with the use of the 140 characters, could be something excting within the world of writers. No cost to writer, no cost to the reader and all the wit, intellegence and creativity that can be squezed into those characters.
Let the Twittering begin!
PS: Jill Priluck's article http://tbm.thebigmoney.com/articles/dead-trees/2009/01/28/advertisements-yourself