Robin Good: If you are looking for tutorials, instruction and help on how to use Yahoo Pipes to aggregate, filter and splice RSS-feed based content for your news or content curation work, you will find a trove of useful articles, video screencasts, and ready-made Pipes for you to use at Dawn Foster's Yahoo Pipes page.
Free.
Very useful. 9/10
Direct url: http://fastwonderblog.com/yahoo-pipes-and-rss-hacks/