Unpaywall: Access to Authorized, Free Research Publications

I ran into this and thought some here would find this browser add-on helpful in our effort to access --legally, research often only found behind "paywalls." It also aids requests for a copy from the author.

Here is an article about this in Techdirt.
https://www.techdirt.com/articles/20170319/02251236949/unpaywall-browser-add-on-that-finds-legal-free-copies-academic-papers-you-see-as-you-browse-web.shtml (Unpaywall: The Browser Add-on That Finds (Legal) Free Copies Of Academic Papers You See As You Browse The Web)


And here is a link to Unpaywall.
http://unpaywall.org/ (Unpaywall)