They certainly are shady. New releases still in theaters? Yeah, they're available. Granted, the quality will be so bad only the most desperate would sit through it. We're talking about some asshat with a video camera that can barely catch every tenth frame on screen but has no problem picking up every cough, sneeze, and inane conversation from the audience.
Films that are on DVD or near release on DVD are obvious rips straight from a disc.
And then there are hundreds, if not thousands of "scam" films, for which some site wants a credit card number or wants to install a "codec" (yeah, right) before you can view a Flash video. LOL. They must catch so many saps with that.