If you use feedburner and relocate your blog, you dont have to worry about informing everyone that you've moved. You can just change the feedburner setting. I think I originally used feedburner because I didnt have other statistics analysis at my disposal and I just thought it was the thing to do.

Subscriber numbers, email delivery baked in, autopinging, javascript add ons after each item in my feed (FeedFlare, they call it, things like "Number of Inbound links to this item via Technorati", one-click subscribe from the feed landing page, browser friendly landing page instead of XML code.

What does this line mean? "In fact I would discourage people from reading my RSS feed online through there browser that defeats the purpose of site branding." Does that mean that you don't want me to read your feed in an aggregator? Or do you just do partial feeds and asume that your readers are clicking through in a desktop reader that displays your branding? Yes, RSS de-emphasizes site branding - it's a trade off for publishers in terms of the relationships they can build with a larger number of subscribers than would visit their pages proper, manually, on a regular basis.

I don't know why people wouldn't use Feedburner - I'm a huge advocate of it. The possibility of the service going down is conceivalbe, but redirects to a Fox page is not. Besides, your aggregator does save the HTML URL of the feeds you're subscribed to. No big deal.