See the summary by Kim Osman in the new edition of the research
newsletter https://blog.wikimedia.org/2015/08/03/research-newsletter-july-2015/
or read the full paper (linked there). It's a bit separate from what
we are doing here (it concerns tweets directly linking to Wikipedia
content, rather than to content about Wikipedia and the movement), but
should still be of interest.
The study is going to be presented at OpenSym later this month; I'll
make sure to attend the talk - let me know in case you can think of
particular questions about the paper that it might be worth asking the
researcher there.
--
Tilman Bayer
Senior Analyst
Wikimedia Foundation
IRC (Freenode): HaeB