This site is hosted by Blogger.com, a wholly-owned subsidiary of Google. Over the past week or so, they've had tremendous problems keeping the Blogger.com network up and running. Friday-Sunday being especially low points.
Tonight, the site may or may not be down for several hours starting at 10:00 EST. I know the back-end technology for me will be down.
Blogger.com explains it all here in techno jargon. In other words, it isn't my fault.