Just curious--where does ResearchGate fit into all of this?  I see constant requests where people ask for papers, but is it actually legal to give them out?  There is an interesting discussion here:
<a href="https:&#x2F;&#x2F;www.researchgate.net&#x2F;post&#x2F;How_is_ResearchGate_dealing_with_copyright_issues_when_posting_our_papers" rel="nofollow">https:&#x2F;&#x2F;www.researchgate.net&#x2F;post&#x2F;How_is_ResearchGate_dealin...</a>