Thie is a site that graphs [PennCourseReview] (http://penncoursereview.com) data in bubble charts using the Google Charts api. This is a more maintainable rewrite of an app that won second place at [PennApps Hackathon] (http://pennapps.com) in September 2011.
When developing, the graph can't be shown by just viewing the file in the browser. You can test it locally by running python -m SimpleHTTPServer in the directory.
To compile the coffeescript, use coffee -o js -c coffee.
To deploy, push to gh-pages.
To update the review data, set write to true on Firebase and run update_data(<token>) in the console on the site. It should take about 15 minutes, and it will log when it's done. Then set write back to false.