We're rewriting Posterous from scratch, so it's a brand new codebase. If you liked Posterous (pre-Spaces), I think you'll like Posthaven. I was the main designer behind the earlier Posterous and also wrote much of the software too. It's easier to write things the 2nd time around.
I really like the blog article. You tried to cover a lot of ground, and I think you did a good job being objective. The analysis on growth of GDP was something I haven't seen presented in quite that way.
Trying to figure if I should just import it to a WP blog or if posthaven is worth it (and will still be around down the road)