Yes, that's right, I'm blogging from the Tiger Dashboard widget DashBlog. I was going to write something like this for myself. I think I still will, but with a better interface and perhaps more options. I still have to look at the Blogger API and see what is possible. Perhaps I will keep an update as to how my progress is going.
Oh, and by the way, RSS is addicting. I had 1000+ articles to sift through at one point on NetNewsWire for Mac. I finally have a mac, a mac mini to be exact. I got it at a stellar price from a friend. I'm loving it so far.