This demo is a game where the users tries to match groups of images to groups of tags based on what word they have in common. The words, images and tags are all taken from external sites which makes the game dynamic and every game is unique. The demo is all written in Ruby on Rails and uses AJAX to create the user ...

Digg that contains just stories from specific topics and/or with specfic keywords. The demo is built using one REST robot that retreives the story topics from Digg and one RSS robot that creates the RSS feed.  This is a good example of how to use both REST robots with JSON output and RSS robots. Robots and the full source code are of course ...