"(…) Yahoo describes Pipes as “an interactive data aggregator and manipulator that lets you mashup your favorite online data sources”. Alright, but what does that mean to the rest of us? Yahoo Pipes uses an easy-to-understand visual editor that allows you to (among other things) take multiple RSS feeds, combine and filter them, and then output all of that information to one RSS feed.
This tutorial will take you through the steps to filter the content of one RSS feed (Techmeme) so that content you may have already read isn’t included in your Techmeme feed. (…)"