When you buy a PLR package, how do you know that the
seller truly has original work and that s/he is entitled to sell
it as hir own? How do you know that there's not some
copyright owner who's not party to the sale between you
and the seller?
My lay understanding of copyright law is that each instance
of proved copyright infringement is actionable, each with
its own penalty. My understanding is that the fact that
you bought the PLR package in good faith is no shield
against a copyright infringement suit.
I know about copyscape, but that's only partially useful. With
all the "minor works" that might not even make it to Amazon.com,
for example, plays put on in a small community, or a lecture by
some unknown professor to a local classroom - these might never
make it online. Yet both would be copyright protected.
So how do you know that you're safe? Is there any kind of
liability insurance that covers this kind of potential problem?