How would I filter out a single user's images from a Flickr pool's feed? [more inside]
posted by foggy out there now on Nov 23, 2009 - 5 answers

Can I filter out previously posted URIs from a delicious RSS feed for a specific tag? [more inside]
posted by Brian Puccio on Apr 17, 2009 - 4 answers

I would like to take a given RSS feed (e.g. MetaFilter's feed), and create a derivative feed containing only the items with YouTube links in the content, with the destination URLs changed to the YouTube links (rather than the source of those links). Does something like this already exist? If not, what's the simplest way to create it? I can write code if necessary, but would rather not if there's an alternative. [more inside]
posted by scottreynen on Feb 20, 2009 - 6 answers

Do you know of a server-side script for combining RSS feeds, removing duplicates, filtering out items that match keywords, and then generating a new RSS feed as a result? [more inside]
posted by Mo Nickels on Jan 2, 2009 - 13 answers

Is there a free service online that will allow me to aggregate RSS feeds, but will only show the last entry from each blog? (more details below) [more inside]
posted by perpetualstroll on Nov 20, 2007 - 5 answers

Does anyone know of a free service like Google News alerts, only for Usenet? Filtering in newsreaders won't do: I need alerts from across all available groups; I can't very well subscribe to 40,000 newsgroups and then filter on the client side. If the results came in RSS form, that would be fine, too. Right now, my best option seems to be to save searches at Google Groups to a browser bookmark group.
posted by Mo Nickels on Jun 3, 2004 - 6 answers