Yahoo Pipes allows users to combine, filter, translate, and geocode data from RSS feeds, JSON, KML, or other similar formats, and power widgets/badges using that data.
The website no longer work. It can be viewed through wayback machine
https://web.archive.org/web/20130314181503/http://pipes.yahoo.com/pipes/
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The website no longer work. It can be viewed through wayback machine
https://web.archive.org/web/20130314181503/http://pipes.yahoo.com/pipes/