Techcrunch has a hilarious exchange of fire between Wordpress founder Matt Mullenweg and Six Apart’s evangelist Anil Dash over the relative merits of Wordpress and MovableType:

Anil Dash: “WordPress 2.5 is about to be released, and we wanted to encourage WordPress users to upgrade. To Movable Type.”

Matt Mullenweg: “Six apart is getting desperate, and dirty.”

Anil Dash: “Desperation is resorting to name-calling and slander instead of substance — if there’s a factual error, i’m glad to fix it.”

I’ve written before about how I personally prefer Wordpress to Movable Type because it offers me an unprecedented open source experience, tons of community support, and easy hackability. It’s also pretty damn fast, so I don’t worry about my server crashing or overloading.

However, it’s also totally ok in the competitive marketplace of free blogging software for one manufacturer to directly tote its own features in comparison to another piece of software. What’s wrong with saying that Movable Type has features x, y, and z that Wordpress is still dreaming of?

Update: Mullenweg, of Wordpress, has followed up his Twitter with a post Wordpress Is Open Source, in which he says “I had held off criticizing [MovableType and Six Apart] after they went OS and before they decided to start an all-out confrontation because that’s not generally what OS projects do to each other.”