As part of this study, beginning in May 2012, our team set up three Twitter accounts and purchased between 20,000 and 70,000 Twitter followers for each of them from eBay and another website searched from Google. After collecting these followers' profiles via Twitter API, as well as additional information from eBay sellers and Google search results, we found many interesting highlights of this business, summarized as follows into 3 categories: Dealers, Abusers and Fake Accounts.
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