Like a lot of people who read the web from several different places, I use Bloglines as my RSS newsreader. Bloglines allows you to make your subscriptions public, so others can see what you've subscribed to. My subscriptions, for example, are here.
What I did not realize is that you can see who is publicly subscribed to any particular feed by clicking on the number of subscribers. And that at least some information, such as the home page you've given, is available to the public for each subscriber.