  In this paper, we analyze content sharing between news sources in the
alternative and mainstream media using a dataset of 713K articles and 194
sources. We find that content sharing happens in tightly formed communities,
and these communities represent relatively homogeneous portions of the media
landscape. Through a mix-method analysis, we find several primary content
sharing behaviors. First, we find that the vast majority of shared articles are
only shared with similar news sources (i.e. same community). Second, we find
that despite these echo-chambers of sharing, specific sources, such as The
Drudge Report, mix content from both mainstream and conspiracy communities.
Third, we show that while these differing communities do not always share news
articles, they do report on the same events, but often with competing and
counter-narratives. Overall, we find that the news is homogeneous within
communities and diverse in between, creating different spirals of sameness.
