Pipes is a hosted service that lets you remix feeds and create new data mashups in a visual programming environment. The name of the service pays tribute to Unix pipes, which let programmers do astonishingly clever things by making it easy to chain simple utilities together on the command line.
Similar to building a flow chart you connect various sources to create a filtered, queried, aggregated RSS feed.
This allows you to do things like filter Digg for just content you are interested in, or look for Craigslist ads for only girls who are blonde. The concept is really cool, but I found that if you didn’t have a fair bit of programming skills it was a bit overwhelming. Likely what we will see is a lot of built queries that you modify just a little to make them work for the masses. Or a dumbed down query builder that does similar things.
Bottom line: Neat for me, too hard for my Mom.