Both sites, bought up by big corporations, used to allow any kind of speech, even copyright "infringement." Now both companies say they will switch sides, and protect "artists' rights."
But the battle over intellectual property rights in the 21st century is not over yet. One expert says old copyright law was designed to protect the author, and the new 21st century copyright law will protect the public.
Economics may play a part. Unless one is copying the entire work, most artists/authors will benefit from someone copying part of their work, because social niches are apt to be so numerous and small that copying work will be the only way one can publicize a work. What do you think? What's the answer to the intellectual property issue?