At first glance, Prologue sounds like a cool tool. But you have to be using WordPress to get any value out of it. That’s not a bad thing.
Some folks are saying it will murder Twitter. That’s not likely to happen and Mike Bogle makes a good case. Nevertheless, I see a useful application of the theme.
First, Prologue is a theme, not a widget. Keep that in mind. And it’s WordPress.com, not dot org. That is a drawback because it means you’ll have to change your current WordPress theme if you want to use Prologue, and if you are using the WP software on your own domain name it isn’t available. If you like your current theme then you’ll have to give it up – ah, sacrifice! Otherwise, you’ll have to do without this unique social feature that takes WordPress.com to an entirely different level.
Personally, I’d like to see this as a WordPress widget for the dot org users. 
To see what Prologue looks like, check out this demo blog.
On a personal note, didn’t this wii tennis player and member of the WordPress team sing that song about saving horses and riding cowboys?
