You may not be able to consolidate all your content in one place, but it looks like Six Apart is trying to make it easier to broadcast your stuff all over the place with a new Facebook app:
Blog It allows you to compose and post updates within the Facebook interface and have them simultaneously appear on any one of the ten supported services, including Movable Type, TypePad, Pownce, Twitter, Blogger and WordPress.
The idea behind Blog It is to simplify the process of updating all the various sites and services you use, offering a single interface for updating all your sites. It's a bit like turning Facebook into a fire hose that sprays your thoughts across the web.
There's got to be a huge demand for this kind of thing; I end up going through a lot of hoops to post podcasts (or links to them) across my site, Facebook, Ning, and a few other places. More of this faster, please :)