On almost any given day, Twitter receives a handful of requests to delete tweets that link to pirated versions of copyrighted content—and quickly complies by erasing the offending tweets from its site. That fact itself is probably unsurprising to people familiar with the Digital Millennium Copyright Act (DMCA) takedown process, which gives sites like Twitter a "safe harbor" against lawsuits related to user behavior and uploads—so long as the sites don't knowingly tolerate pirated material or links to such material. [......]












