Check out the end of the file name. If you are searching for "frenchfries" it will be something like "Tawni and her naughty sister bare all (frenchfries)". Basically they're spammers. They have some sort of software which detects what you are searching for and tags it onto the end of their files so that they show up. Then, when you watch these films, they are always pop-ups or ads for their sites. If your P2P has the capability, just ban those hosts which carry those files. New ones pop up every now and then but for the most part once you ban them they're gone for a long time.