"I hope if anyone is getting started here, in bootstrapping an open alternative to Twitter, that they will be compatible with these two pieces of software." He's talking about his software (that nobody uses), and that's the agenda behind the piece. Just in case the "open Twitter" takes off, while he has no intention of working on it, he wants to inject the idea that developers have some kind of moral responsibility to make it compatible with his stuff. Oh, and because he forgot it this time, I'll put this in: he thinks he invented RSS.