Planet Express, Python aggregator to create metablogs
First there was Planet Planet, Python package to aggregate feeds. Now there's Planet Express (just version 0.1 so far), to aggregate feeds and re-load them into a given blog.
In this case, the author, a well known Spanish geek, RVR, has made it so it can feed automatically Typepad blogs. So, you have a metablog there: take feeds from distinct sources, and re-package them as a new site. Working example, Planet Spanglish.
I wonder if it could be adapted to feed a Coreblog, instead of just Typepad blogs... After all, it's made of the same raw material: Python