What are the state-of-the-art real world NLP applications on social media data?
This cuts two ways. There is a whole universe of Sentiment Analysis applications for social media; however, there are also the natural language understanding (NLU) [1] applications, such as conversational agents and social bots, increasingly used for instance in social CRM. Examples of social bots include variations on “autoblogging” platforms, such as:
c) http://github.com/wilson428/Robottke
[1] http://en.wikipedia.org/wiki/Natural_language_understanding