Hyperlinks and defamation in the Supreme Court of Canada
Crookes v Newton 2011 SCC 47 (CanLII) (19 October 2011)
From the headnote (emphasis added):
To prove the publication element of defamation, a plaintiff must establish that the defendant has, by any act, conveyed defamatory meaning to a single third party who has received it. Traditionally, the form the defendant’s act takes and the manner in which it assists in causing the defamatory content to reach the third party are irrelevant. Applying this traditional rule to hyperlinks, however, would have the effect of creating a presumption of liability for all hyperlinkers. This would seriously restrict the flow of information on the Internet and, as a result, freedom of expression.
Hyperlinks are, in essence, references, which are fundamentally different from other acts of “publication”. Hyperlinks and references both communicate that something exists, but do not, by themselves, communicate its content. They both require some act on the part of a third party before he or she gains access to the content. The fact that access to that content is far easier with hyperlinks than with footnotes does not change the reality that a hyperlink, by itself, is content neutral. Furthermore, inserting a hyperlink into a text gives the author no control over the content in the secondary article to which he or she has linked.