So I'm definitely not the tech writer around here, which is why I'll write about the sociological implications of Twitter rather than any technology behind it. That and I'm afraid of Chris Pollette and Jonathan Strickland following me into the bathroom and locking the door behind them. For being so pasty, those two know how to wield bicycle chains and car radio antennae with surprising effectiveness.
I do not, in fact, have a Twitter account. I'll probably be a member of the 26th wave (coming up two from now), but I am fascinated by the ideal Web 2.0 model our society's faithfully followed, as established by MySpace and perfected by Facebook, wherein a clever new social media technology is unrolled, early adopters figure out even cleverer novel uses for it, these new uses are picked up by the aged media, which disseminates news of the tech to everybody else who, in turn, take up use of the service, which leads to more media exposure, even further use and the final stage, complete and utter entrenchment in said society.