Several of those don&#x27;t have real or full paywalls anymore.<p>I was thinking more of Elsevier, which actively sues websites that publish mirrors of papers (see <a href="https:&#x2F;&#x2F;torrentfreak.com&#x2F;elsevier-cracks-down-on-pirated-scientific-articles-150609&#x2F;" rel="nofollow">https:&#x2F;&#x2F;torrentfreak.com&#x2F;elsevier-cracks-down-on-pirated-sci...</a>).