Justice Ginsburg Says Grokster is Not About P2P Technology

From  the concurring opinion:

Even if  the absolute  number of  noninfringing files  copied
using the Grokster and StreamCast software is large, it does
not follow that the products are therefore put to substantial
noninfringing uses and are thus immune from liability.  The
number of  noninfringing  copies may be reflective of, and
dwarfed by, the huge total volume of files shared.  Further,
the District Court and the Court of Appeals did not sharply
distinguish between uses of  Grokster’s and  StreamCast’s
software products  (which  this case is about) and uses  of
peer-to-peer technology generally  (which  this case is not
about).  [emphasis added]