This free data set is for training and testing sentiment analysis algorithms. It consists of 5513 hand-classified tweets. Each tweet was classified with respect to one of four different topics.
The zip includes a readme.pdf with installation instructions.
Download: sanders-twitter-0.2.zip
A free, simple Python code for doing sentiment analysis is also available.
Feedback is greatly appreciated. Drop the author (Niek Sanders) a line at njs@sananalytics.com.