I would like to share a couple of random, somewhat unrelated items:

• A new version 0.1.3 of POW was released recently. This version adds stability and bug fixes and some cool new features. The interesting stuff: Firebug Support and Standalone Server Support. This should be very interesting!
• Mark Finkle wrote an interesting introduction to WebRunner - a "Site-Specific Browser" that can run your webapps in a separate process from your normal browser. This makes web applications feel more like desktop applications and helps keep your main browser from getting too bloated with the overhead from sites like Google Reader or G-Mail. I'm looking forward to trying this out, I will report back once I have had a chance to use it for a few days.

More rambling below... I tried to comment on Mark Finkle's blog but I'm too daft to find the comment form. So here is my comment, it will not make much sense if you have not read the post about WebRunner...

A lot of features that I find myself wanting in an XULRunner app are things that have already been implemented by Firefox, such as some that you have put into webrunner and for example the ctrl - +/- to resize text. I would love to see a section on devmo that detailed how to get those features working in XULRunner apps and I'm willing to help write it ;)