Opinion Mining, Sentiment Analysis, and Opinion Spam Detection

List of datasets used to study opinion mining, sentiment analysis, and opinion spam detection

Access Requirements: 
Free; permission required
Example Publications: 

Jindal & Liu, WWW-2007, WSDM-2008; Lim et al, CIKM-2010; Jindal, Liu & Lim, CIKM-2010; Mukherjee et al. WWW-2011; Mukherjee, Liu, & Glance, WWW-2012; Mukherjee & Liu, ACL-2013; Mukherjee & Liu, EMNLP-2010