MTOS has a licensing problem, right out of the gate!
MTOS, or Movable Type Open Source, has been released under the GPL license. I have in fact downloaded the newest release, and inspected the GPL license myself. It's there, it's real, they can't withdraw it now. And that's all good. But there is another license mentioned in the product itself. Frankly, the licenses are at odds. Take a look at the screen shot.
What license does that link to? Well, click that little screenshot if you must know. But I can tell you. It goes to a license for the beta that provides all sorts of restrictions that are prohibited by the GPL.
I'm inclined to ignore this "other" license. They've put their product out under GPL, and GPL is what is included in the .zip file. This other license cannot do what it tries to do to a GPL'd product. Because of the GPL, I'm free to make a hundred copies, give them to friends, and use it long after January 31, 2008.
By the way, if anyone wants to see what it looks like right out of the box, the default setup is online at one of my test servers. Pretty simple at the start. There are a lot of options to customize it, but I haven't gone through all that yet. Note that this blog here runs on the older MT 3.2. It's OK. I've also used Drupal and WP and a few others (including my own product, which turns a phpBB forum into a blog). They all have their uses. But MT 4 holds the most promise right now. It's just beginning to walk down the Open Source path, and a good community could spring up around it.
...So long as it doesn't try to relicense it's GPL'd products, natch. :)