Why did I change to a new blog platform ? Simplification. It's not a complicated decision, but I'm not hosting any more basement servers. A local build can't match up to Amazon/Cloudstack/Azure. I'm doing work with Drupal and WordPress, but my final decision was guided by the rule of parsimony.
I've slowly moved a lot of content into a Google Apps domain, so I dropped my static IPs and settled on a customized Google site/blogger. We'll see how it works out.
As much as I can, I'll be leveraging cloud services.