An unusual look at Yahoo's RSS feeds

Yahoo has released an innovative system for processing RSS feeds by passing them through fire, water, and copper pipes.
You do not just subscribe to RSS and divide them into directories or assign labels, as in conventional aggregators. You build chains of them using a filter system similar to the UNIX pipe system.
The graphical interface is very convenient and allows you to visualize the entire process (image from LifeHacker ):

I think that the system will appeal to many lovers of RSS subscriptions, which are tired of the uniform and unproductive classification of content.
Now you can mix feeds and greatly simplify their viewing.