Trippy is a project mainly written in RUBY and JAVASCRIPT, it's free.
An App to Give You Just Enough to Read on Your Commute.
Use it: http://trippyapp.com. Read about it
Built at TimesOpen hack day 2010
config/config.yml with hopstop_api: your_key and wc_threshhold: min wordcountrake db:migraterake jobs:workruby trippy.rb