Opinion mining

Opinion Mining, Sentiment Analysis, and Opinion Spam Detection(A very useful websites) http://www.cs.uic.edu/~liub/FBS/sentiment-analysis.html

http://www.cs.pitt.edu/mpqa/

http://www.gooseeker.com/cn/node/Fuller/2010041302

http://www.cs.uic.edu/~liub/FBS/sentiment-analysis.html

http://www.cs.cornell.edu/home/llee/opinion-mining-sentiment-analysis-survey.html

http://www.cs.pitt.edu/mpqa/