Update Aug 2016: And now it has moved back to jackvinson.com. Old links to blog.jackvinson.com may no longer work, unfortunately. All the top level things should work as expected.
Okay, the blog has moved from jackvinson.com to blog.jackvinson.com. People that read via modern aggregators should see their feeds move all by themselves. I'm setting up general redirection, so old blog URL's should get redirected properly as well.