Online mind maps in Silverlight

I’m a big fan of mind maps.  I use MindManager, but there’s now an online Silverlight alternative from DropMind. 

It’s currently in beta, so there’s a few things that need addressing to make it as nice to use as MindManager (such as keyboard navigation).  Despite this, it looks feature packed compared to other online mind mapping tools I’ve tried.

There’s also a desktop version.  It has none of the above keyboard problems.  It also looks and feels very similar to MindManager:

DropMind

MindManager

It’s nice to see Silverlight apps like this.  I’d probably switch to it once all the glitches are resolved.  MindManager’s great, but it comes with a lot of fluff I don’t need, like Office integration and RSS features.