What is Twitter, a social network or a news media?

@inproceedings{Kwak2010WhatIT,
  title={What is Twitter, a social network or a news media?},
  author={Haewoon Kwak and Changhyun Lee and Hosung Park and S. Moon},
  booktitle={WWW '10},
  year={2010}
}
Twitter, a microblogging service less than three years old, commands more than 41 million users as of July 2009 and is growing fast. [...] Key Result In order to identify influentials on Twitter, we have ranked users by the number of followers and by PageRank and found two rankings to be similar. Ranking by retweets differs from the previous two rankings, indicating a gap in influence inferred from the number of followers and that from the popularity of one's tweets. We have analyzed the tweets of top trending…Expand
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