More thoughts about tagging

In "The Several Habits of Wildly Successful del.icio.us" I read:

After tracking a few things for a while, you’ll start to wonder where a particular user gets all their interesting bookmarks. Maybe they’re connected, or maybe they’re just copying someone else who is connected. Either way, you can check out other users’ inboxes by just replacing their USERNAME in this url:http://del.icio.us/inbox/USERNAME. By exploring through a few layers of who is watching who, you’ll start to come up with your own list of people to stalk–just add them to your inbox!

Does anybody else think it's really creepy that your tags can be stalked this way?