Social Networks Cannot Be Required to Monitor or Filter Users' Communications to Prevent Copyright Infringement, European High Court Says

The highest court in Europe ruled yesterday that social networks cannot be required to monitor and filter their users’ communications to prevent copyright infringement of music and movies.  The European Court of Justice (ECJ) found that imposing a broad filtering obligation on social networks would require active monitoring of users’ files in violation of EU law and could undermine citizens’ freedom of expression.

https://www.eff.org/deeplinks/2012/02/eu-court-justice-social-networks