Christine Okret-Manville has published "Academic Social Networks and Open Access: French Researchers at the Crossroads" in LIBER Quarterly.
Here's an excerpt:
For some years, researchers have been using new ways to communicate and share their work by using academic social networks. In an attempt to foster the development of Open Access in France, the French consortium COUPERIN (Unified Consortium of Higher Education and Research Organizations for Access to Numerical Publications) proposed that academic social networks could be used to convince researchers of becoming more involved in Open Access. To test this hypothesis, a nationwide survey was launched in 2014 to explore whether and how these academic social networks are used to share content, but also how they compare to other Open Access classic tools. Within a month (20 May to 20 June), 1,898 researchers answered this 28-question survey. It was fully completed by 1,698 of them.