document: Truthy : mapping the spread of astroturf in microblog streams Online social media are complementing and in some cases replacing person-to-person social interaction and redefining the diffusion of information . In particular , microblogs have become crucial grounds on which public relations , marketing , and political battles are fought . We demonstrate a web service that tracks political memes in Twitter and helps detect astroturfing , smear campaigns , and other misinformation in the context of U.S. political elections . We also present some cases of abusive behaviors uncovered by our service . Our web service is based on an extensible framework that will enable the real-time analysis of meme diffusion in social media by mining , visualizing , mapping , classifying , and modeling massive streams of public microblogging events .
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