College & Research Libraries has released an e-print of "Faculty Use of Author Identifiers and Researcher Networking Tools" by Clara Y. Tran and Jennifer A. Lyon .
Here's an excerpt:
Our survey results show that there is recognition and use of existing Author ID and researcher networking profiles, as well as some professional use of online social media platforms amongst academic faculty across all disciplines. Additionally, there was notable interest in access to training and support resources on the same resources. At this time, ORCID appears to have gained the highest level of awareness and use among Stony Brook faculty. Faculty also reported use of the two most well-known commercial authorIDs: Thomson Reuters' ResearcherID and Elsevier's Scopus Author ID.