Awesome
Basic-Tweet-Sentiment-Analyzer
This software enables a user to search the twitter API for various search terms and perform basic sentiment analysis over the results.
Contact Information
The Ruby code in this project was originally written by Christopher MacLellan in 2010. If you have any questions he can be reached at maclellan (dot) christopher (at) gmail (dot) com.
There is a blog post that references this github at http://www.christopia.net/2011/06/05/sentiment-analysis-of-tweets-using-ruby/