Proceedings of the 50th Annual Meeting of the Association for Computational Linguistics, pages 638–646, Jeju, Republic of Korea, 8-14 July 2012. c 2012 Association for Computational Linguistics. Systems using sentiment analysis are affected, as sentiment-suggestive terms appearing in metalanguage (especially in quotation, a form of the phenomenon (Maier 2007)) are not necessarily reflective of the writer or speaker.