 It performs mood analysis on tweets geo-located in various regions of the United Kingdom  computing on a daily basis scores for four types of emotion: anger, fear, joy and sadness   .
<meaning-changed>  It performs mood analysis on tweets geo-located in various regions of the United Kingdom  computing on a daily basis scores for four types of emotion: anger, fear, joy and sadness   .
 It performs mood analysis on tweets geo-located in various regions of the United Kingdom computing on a daily basis scores for four types of emotion: anger, fear, joy and sadness Privacy issues The rise of infoveillance brings up questions about privacy. Privacy concerns are partially dependent on the level of analysis and how data are collected and managed. For instance, individuals may be re-identifiable from search query datasets that have not been properly de-identified. Privacy concerns are increased if data analysis is not done automatically and if search trajectories of individual users are examined .