I’ve just been playing with Yahoo pipes, and have made my first pipe. Actually all I did was change the New York times feed with the guardian world one (this basically gets the headlines from the guardian and matches them with pictures from flickr)
It looks like pipes could be a lot of fun, I like the idea behind the one in which someone has combined craigs list with a list of local cafes/shops, so that you can search for places to live in a city that are close to the coffee shop.
Another cool one takes the itunes top ten downloads and runs it against youtube.
Nice to see Yahoo! come up with something instead of google.