Use Feedburner with your own Domain for $3
Stay Master Of Your Feed Domain describes how to use feedburner to track your blog feed. I think it’s way worth it. It’s very hard to tell who is syndicating your content otherwise. That said, a drawback to feedburner is that people subscribe to your RSS using a feedburner owned domain. No big deal, but if feedburner goes under or changes hands or if something better comes along, you’ll need to convince all your subscribes to go through the onerous process of changing their aggregator settings. It’d be way better to just control that url, which feedburner allows you to do for $3 / month.
UPDATE 2/12/07
Alternatively, you could follow these instructions:
http://www.roguewolves.com/drupal-and-feedburner
It shows a very easy way to use your .htaccess file to effectivly mask the feedburner URL as your own. Good stuff.