All is not gloomy, however:
On an annual basis, Twitter is still going gangbusters with 1,271 percent growth from 1.4 million visitors in October, 2008. And on a global basis, it still seems to be chugging away with 58.4 million visitors in September. But a hypergrowth company like Twitter cannot afford to slow down in its home market.
Here's what I think this means: People sign up and then realize it's all a bit overwhelming. A smaller core actually use it actively. Plus, with Facebook and LinkedIn offering pretty much the same thing as Twitter...well, I think Twitter needs to evolve, a bit.
A while ago, I posted about a Harvard study on Twitter that showed most people on Twitter follow a pretty small number of posters. I recently waded back into Twitter on behalf of a client and found countless accounts with one or two tweets that were months old.
What does this have to do with communication? I think communicating in 140-character bursts isn't conducive to true conversation. It's more broadcasting thoughts that may, or may not, be interesting to others.