This is a good idea in general, but the tip at the end presents another compelling reason to use FeedBurner.
Extremely useful for searching your own followers. I’m going to use it to find people who will weigh in on a survey related to their field… I figure since they’re already following me, it’s much more likely that they’ll help.
A domain search tool full of AJAXy goodness. It updates on the fly to provide a quick glance at what’s available.