TechCrunch outlines the most recent battle between micro-blogging platforms, in this case: Twitter vs. Pownce:
“The main differences: Twitter is mobile-ready, allowing users to receive friend requests and new messages via text message. And Pownce gives users more flexibility in communicating by allowing messages just to friends. Pownce also allows different kinds of messages – file transfers, events, links and plain text messages (Twitter allows text and links only). There’s no reason, though, that users will use both. They’ll go with one or the other, or neither.”
This form of communication is still in the early stages, and the winner could find themselves with a huge community, and a boat-load of cash (when they sell it to Google.)
Update: More from Robert Scoble.