I’ve been using a WordPress plugin to aggregate my comments, Facebook updates, etc. The other day, though, I read about the standalone open source SweetCron software that does the same thing only with a few extras.
Just like ComplexLife, after installing SweetCron you start giving it feeds of sites you post/contribute/update to, and then it regularly goes out and pulls down the feeds and aggregates them in a central area. Unlike ComplexLife, however, SweetCron writes each item to a database where you can edit and tag it. It also displays the entire text of the item and any graphics, whereas ComplexLife just provides the subject line and then a link to the item in question.
Overall, I was very impressed with SweetCron — check out my SweetCron lifestream if you’re curious what it looks like. Still in beta, but very stable and capable.