I signed up for tumblr a while ago, but haven't checked it out since then. Apparently they've added a lot of new features since then, and I am now aggregating all my different things in one over at inc.verture.net. I had some problems with the custom domain, but it should be working now.

In short, tumblr is a service that let's you combine the feeds of all the services you use on the web (in my case it's twitter, flickr, this blog, del.icio.us, and my shared items in Google Reader) and display them in one place. They also have a nippy little Post to tumblr bookmarklet so you can post stuff straight to your tumblr-account.