bill - 2:20 am on Feb 9, 2009 (gmt 0)
Is feedburner a service that updates aggregators?
FeedBurner is a feed management system. It does have a ping service to notify services of changes to your feed. You could also ping most of these manually.
Also: so in principle if I simply change the content of the stuff between the <description> tags the aggregators will recognize the altered content and update the subscription?
RSS 2.0 uses
<pubDate> and Atom uses
<updated> to indicate new items.