I have been playing with yahoo pipes. Super cool. All in all it is a great step for yahoo in showing how "the network is the computer" and trying to enable end user programming. I am very skeptical that it will get more users than Apple's Automator, but it is a great idea for a product.

I think the product is still in beta. The UI is buggy. Many pipes don't behave as expected, such as using a sort pipe on a Date type uses an alphanumeric sort, instead of a date sort.

I was trying to build a content publishing pipeline for many of the different web apps I use, such as flickr, yelp, etc. I will be keeping an eye on pipes to see when I can get it working. Cheers to the yahoo team!