Did you ever want to know if the house price listing on craigslist is inflated or not? This mashup cross references Zillow to find out what they think the estimated price should be. Not all listings from craigslist work, but many do.
I updated the code to use the latest AWS and added a few more relevant description items that might be useful. Here is the original pipe: http://pipes.yahoo.com/pipes/pipe.info?_id=GEIrmERC3BG6_SycyzUFzw
find out who's linking to your site. using thumbalizr.com to give a visual preview of the linking site. if this is the first time hitting the pipe, the thumbnails may take 2mins to generate by thumbalizr. wait and then come back.
This Pipe prepends a static Yahoo! map to your description field in List Mode and RSS/JSON. The static map will only show up if Pipes can detect geo location data in the feed.