What's This Twitter Thing?

Celebrities like Oprah and George Stroumboulopoulos use Twitter to inform TV audience about the guests in their forthcoming shows and generate interest and buzz about it. You can barely read anything online without hearing about it, and it seems like everyone has or is planning to join.

Over 60 percent of current Twitter users fail to return the next month, according to data from Nielsen Online. Is there an identifiable need for Twitting that could translate into a critical mass? Can twitter help expand the initial use by Innovators to Early Adopters?

It may be too soon to tell, but it looks to be an interesting way to communicate.