From: "Pikas, Christina K." <[log in to unmask]>
Date: Thu, 22 Oct 2015 00:14:56 +0000

This is a well-established practice at this point. See this article,
for example:

Gardner, C.C. and Gardner, G.J. (2015) Bypassing Interlibrary Loan Via
Twitter: An Exploration of #icanhazpdf Requests. Paper presented at
ACRL 2015. Retrieved from:

http://www.ala.org/acrl/sites/ala.org.acrl/files/content/conferences/confsandpreconfs/2015/Gardner.pdf