This pipe returns the cached output of the specified pipe when passed the specified parameters. The cache will be refreshed with the specified frequency. This module makes use of the RSS caching service by rsscache.com. This will insert some ads into the feed. Be nice, and leave them there.
Clone the pipe, and in both of the "Unique" operators, you must edit "Filter non-unique items based on" to some field that will have a different value for different items in the same feed, but the same value for the same item in different feeds.