1. A sentiment classifier for sentiment classification of content comprising: an aspect classifier configured to classify content as being related to a particular aspect of information, the aspect classifier incorporating at least a portion of a domain specific sentiment lexicon; and a polarity classifier configured to classify the content classified by the aspect classifier as having one of a positive sentiment of the particular aspect of information, a negative sentiment of the particular aspect of information or as having no sentiment of the particular aspect of information, the polarity classifier incorporating at least a portion of the domain specific sentiment lexicon.