But of course!
I have been playing with Nick Bradbury’s MOST EXCELLENT new product,
FeedDeamon which gathers sydication feeds into one very cool tool.
And I noticed when playing with the settings that if the author of the XML has indicated how often their data might be updated, he will honor that, and not revisit the site more often than that.
I noticed the site below was one of those, and traced it to the TTL tag
http://www.brainstormsandraves.com/xml/rss.xmlSo I added that to my RSS style sheets, and will check at work later today to see if that tag is picked up in my file.