Was just trying out the latest Yahoo Pipes!! While accessing for the first time, could not get all the advantage of this project (still in beta). But could find a tutorial on the Yahoo Pipes!!
So, before trying the pipes, try reading the tutorial once here.. and then go ahead and create your own pipes.. possibilities are endless
note: On the first day of release of this project, Yahoo servers clogged with load.. and they put the message "Our pipes are clogged, we have called for plumbers!!" :-)