Here’s a new way to find full text content offered freely somewhere online!
Easily install Unpaywall’s little lock symbol to your tool bar (Chrome or Firefox required). Then if you encounter an article for which a free full text source is available, a larger lock will appear on the right. A simple click takes you to the article. Since Unpaywall only matches with legally uploaded versions, it can be a great addition to your web search tools and will compliment other resources you may use.