Is news sharing on Twitter ideologically biased?

Jonathan Scott Morgan, Cliff Lampe, Muhammad Zubair Shafiq. Is news sharing on Twitter ideologically biased?. In Amy Bruckman, Scott Counts, Cliff Lampe, Loren G. Terveen, editors, Computer Supported Cooperative Work, CSCW 2013, San Antonio, TX, USA, February 23-27, 2013. pages 887-896, ACM, 2013. [doi]

@inproceedings{MorganLS13,
  title = {Is news sharing on Twitter ideologically biased?},
  author = {Jonathan Scott Morgan and Cliff Lampe and Muhammad Zubair Shafiq},
  year = {2013},
  doi = {10.1145/2441776.2441877},
  url = {http://doi.acm.org/10.1145/2441776.2441877},
  researchr = {https://researchr.org/publication/MorganLS13},
  cites = {0},
  citedby = {0},
  pages = {887-896},
  booktitle = {Computer Supported Cooperative Work, CSCW 2013, San Antonio, TX, USA, February 23-27, 2013},
  editor = {Amy Bruckman and Scott Counts and Cliff Lampe and Loren G. Terveen},
  publisher = {ACM},
  isbn = {978-1-4503-1331-5},
}