I wrote a moderately useful lifestream hack a year or so back, just checked on it and it's slightly broken, but usable;

http://dsingleton.co.uk/code/lifestream/dsingleton.co.uk

The beautiful thing is that it's entire generated from a single URL. This requires the site to have implemented the microformat rel="me" link as it uses the SocialGraph API to scrape connected URLs. All matched pages are checked for a rel="feed" style link, those are all scraped and merged together to form the timeline.

Programatic is nice, but also a huge mess. I never got around to grouping/bubbling interesting content, and it unfortunately seems that my SG data is a bit corrupt, my URL has been linked to various things that aren't me.

edit note: I only resurrected this the other day, the code is awful garbage, but it is due a refactor and release soon if someone else wants to hack on it.