there is really no reason to use Feed Burner. WP’s internal syndication system is quite good.
Feedburner can tell you something about those pulling your feed. WP cannot. For that reason alone it’s very useful.
I use it primarily for the reporting — FB will help me figure out how many folks are pulling my feeds which is something I couldn’t get a handle on (easily) with other analytics options.
I’ll also add that Feedburner has the email notification, an easy way (if you feel your reader my still not be RSS savvy) to add that option. It also has the easy to add chicklets for viewers to add your feed to their aggregator of choice. All in all, I echo the sentiment that FB is not useless to WP users. Quite the contrary.
Ok, does this mean you end up obscuring the built-in feed support and promote Feedburner instead?
Yup, that plugin makes life so very very simple.
