We’ve been working on how to get around paywalls legally and connect people with accessible versions of papers since 2013. It’s a hard problem to solve! That’s why we’re so pleased to see Unpaywall and oaDOI (from the team behind Impactstory) working on this problem. Unpaywall and oaDOI are terrifically designed browser plugins and websites that instantly and legally find accessible copies of articles, if they are available.