Twitter vs. Pownce: The Great Debate

Or is it Twitter vs. Facebook?
Or is it AIM vs. Yahoo! Messenger vs. GTalk?
Or Facebook vs. LinkedIn vs. MySpace vs. . . .
Okay. You get the picture.
Is this a ‘winner take all’ game, or can we expect that people will use many different services for some time to come?
It is most likely that everyone reading […]