It's not just videos. Anything you put up on the 'net has a chance to get pirated. I've had articles of mine plagiarized and posted to other websites with no attribution, and in one instance even used as parts of a script for a YouTube video with no recognition until I commented about it on their channel, and other commenters raised enough hell over it that they deleted the video.
It's obnoxious, it's frustrating, but you seem to be handling it the right way: report, move on, and keep doing what you're doing. You'll never be able to cut all the heads off this hydra, but keep fighting as best you can. You're worth it. :)
RE: WHERE TO FIND PIRATED CONTENT AND RECORDED SHOWS AS A CAMGIRL - A DAY IN THE LIFE OF A MODERN CAMGIRL