http://shanbady.github.com/NLTK-Boston-Python-Meetup/ Shankar Ambady of Session M will give a tutorial on the Python NLTK (Natural Language Tool Kit). Shankar had previously presented a comprehensive overview of the NLTK last December at the Python meetup. The Python NLTK is a very powerful collection of libraries that can be applied to a variety of NLP applications such as sentiment analysis. His presentation from last December may be found here (click on Boston Python Meetup Materials) : http://www.shankarambady.com/ http://microsoftcambridge.com/Events/TwitterTextMining/tabid/784/Default.aspx