Proximity is a strong driver for commenting on public news sites, and local newspapers are more likely to allow users to comment on articles than are national newspapers.
A quantitative content analysis of 3,444 online news articles in nine Swedish newspapers has found the most engaged users in terms of posting comments are found among users of local (proximal) news sites.
Susanne M. Almgren and Tobias Olsson in their study showed the practice of sharing news through Facebook is an overwhelmingly dominant user practice compared to commenting on news sites or tweeting news. Tweeting news is associated only with news sites affiliated with evening tabloids and national morning newspapers. Sharing news through Facebook is 20 times more common than tweeting news or commenting.
The study found connections between online news sites and their users vary depending on different participatory features: user comments, sharing news through Facebook or tweeting news and the affiliated paper edition focuses on national or local content.
To read the full text of the study: http://bit.ly/2AcDpYK
Olsson, T., &Almgren, S. (2016). Commenting, Sharing and Tweeting News: Measuring Online News Participation. Nordicom Review, 37(2), 67-81.