In the past I have been using Akregator and GoogleReader to read my RSS feeds. The latter is particularly interesting as I am not right to a single computer and that it supports social sharing.
However, neither seems to support filtering or preprocessing of feed items into subfolders. In particular, LinkedIn decided to put status updates in the RSS feed to new connections. I have to admit I did not dive into LinkedIn's set of feeds, so they actually might have a feed for new connections only... that said, I did not change RSS feed and it did only list new connections...
So, I like to be able to filter out anything that is not a new connection. Then I realized, what I would love is Yahoo Pipes on the level of my RSS reader... with JavaScript, XSLT, whatever, I don't mind.
Is there any such RSS feed reader around that supports some kind of scripting to support the above ideas?