Have you ever wanted to merge all the separate Oracle RSS aggregators into one, and subscribe to the merged feed?
Lazytom's FeedJumbler provides such a service, where you can list a number of RSS feeds, and FeedJumbler will publish a single RSS/Atom which you may subscribe to instead.
This has been a godsend for myself, having nearly drowned in Oracle aggregator feeds more recently. The FeedJumbler site feed makes it very easy to see duplicate entries and only read what I need to.
Now, if I could only find another RSS service that eliminates duplicates from a feed, I'll have 100% perfection.