Hmm, do you have an RSS of just Amiga.org? Now it's screwing up
http://amigann.com since you get a lot of duplicates with news from other places looking like they are from amiga.org.
Ah, and how about using RSS 2.0 instead of the foobared 0.91/0.92/1.0 variants?
http://blogs.law.harvard.edu/tech/rss it shouldn't take more than ten minutes to upgrade it

Take a look at pubDate, guid and lastBuildDate for nice features that help alot when syndicating and using RSS.