NTU » Semantic Search Engine

Link: http://tech.groups.yahoo.com/group/SentimentAI/
"This group is designed for all those interested in the automatic identification, extraction and understanding of SENTIMENT, OPINIONS and AFFECT in text, as well as for those interested in its generation". I did join this group. There are useful information and a lot of members such as Bing Liu, Lillian Lee, Fabrizio Sebastiani...who have been working on this area for a long time.

You may join the group, post your question or share your knowledge with researchers around the world.