I've started playing around with Orchard, an open-source content-management system, as a replacement for this blog's infrastructure (and as a replacement for other things, like inner-drive.com. It hasn't been all skittles and beer: Orchard has serious issues running on Microsoft Azure Cloud Services, though it runs fine on Azure Web sites.
It turns out, my employer is moving to Umbraco, a different open-source CMS. So it makes sense to try that out, too, as I'll have to support Umbraco at work anyway—meaning I can learn it during work hours instead of after.
Working in my few free hours after work, of course, makes this decision take longer than I'd like. That, and I don't want to do this again for many years.
So no major changes to report yet, but I'm getting closer.