Yesterday, UserLand announced Radio Community Servers (RCS). The idea behind it is that you can host your own Radio "cloud". If I understand this all correctly, the cloud does things like keep track of recent posts, manage comments, etc. It basicly lets you be your own entity (Dave Winer has a good post about the strategy of RCS).
So now I'm considering using this for work more to replace my work blog. I need to think it through, but I would be more then willing to buy copies of this for work on my own dime to get people using it.
One thing I like about RCS is that it lets the Radio community be distributed. You don't rely on one central place for everything. It's like email. Companies and ISPs run their own email servers. So RCS lets you do that with your Radio weblog. It's all pretty cool IMHO.