For questions about the internet. Please ensure a tag for the jurisdiction is also included. This tag should not be used when the question does not crucially hinge on internet usage or involvement.
The internet has brought with it a number of novel rulings, particularly with regard to copyright.
In the United States of America, A&M Records, Inc. v. Napster, Inc., 239 F.3d 1004 (2001) was a ruling that found that the P2P service Napster, could be held vicariously and contributorily liable for copyright infringement, based on its ability to monitor and restrict access to copyrighted materials.
In Australia, Dallas Buyers Club LLC v iiNet Limited (No 3)  FCA 422, the Federal Court held that a group of internet service providers should be compelled to produce the contact details for account holders who were alleged to have infringed copyright.
This was done with the provision that the court would review these letters prior to their issuing, in order to avoid the speculative invoicing that has occurred in other countries.