Weblog 0.6 is out. This release allows you to use relative URI. They will be rewritten to make them point to the right URI.
<a href='test.html'> will turn into
href='http://my.blog.org/test.html'> when needed. Not exactly a
killer feature, but it is really convenient!
As usual go check Weblog's page
A standalone version of Weblog including Jinja is also available: Weblog + Jinja.