This article reads as wishful thinking of what Twitter is and will become from the viewpoint of the San Francisco startup scene who have using Twitter now for a few years and have watched it morph.

Twitter could be, especially in the future, many of those numbered items; it is only wishful thinking that people not use it for vanity or to actually answer the question, "what are you doing?" or as a replacement for quick emails or use it as a blog. One needs only look toward Birdhouse to see how serious publishing on Twitter can be taken.

Something Twitter is not: definable during its rapid growth.