Fee-based Twitter vs. Ad-Supported Twitter is a false dichotomy. This smells like a PR stunt.
How about an open-source Twitter-like service that can run on your own server and federate with others? http://www.Status.net has offered this for several years now and they have done an outstanding job of creating a free and open alternative for status-feed based communication.
Twitter's functionality is basically email+listserv. I've often wondered why the big email players (Google in particular) didn't field a competing service simply built on top of email. You could still use your email account as usual, but using a special client you could use the same account as a Twitter clone.
How about an open-source Twitter-like service that can run on your own server and federate with others? http://www.Status.net has offered this for several years now and they have done an outstanding job of creating a free and open alternative for status-feed based communication.