I’ve been looking for this like the holy grail for 
about a year now, and it’s not really in production yet, but I can see that it will rapidly become very popular. Yahoo has introduced a new service, Yahoo Pipes, that allows us to visually select and combine any number of blog RSS feeds, filter their contents, sort them, and then output those combined feeds as a single feed. This combined feed can then be used by anybody for any purpose. (Well, the terms of service may restrict it to non-commercial, so read them carefully.)
I’ve already been doing much of my real-time feed-reading and mashing using some Gecko Tribe products by Antone Roundy. CaRP and Grouper are the products I’ve been using. And Feedburner also does some of what Pipes does. But these tools don’t really allow me to intermix the feeds in chronological order. So that’s where, in my opinion, Pipes will really excel.
Yahoo Pipes provides an easy-to-use on-screen visual interface that can be used to easily combine feed sources and juggle them to product a nicely-mashed output feed. [read on…]
I was recently reviewing the seven newsletters of the Computers And Teaching [CAT] project. I previously commented on an article that predicted the