Milton Twins are two apparently twin girls who share a website. There is no interaction between the two, which supports this idea. Their site had this on it:
Hey guys, we're the Miltons Twins, Marissa and Melissa. We're the hottest, wildest, and most willing set of twins you'll ever see in your life. That's right. identical twins with identical tastes and we're ready to share it all with you. The fun doesn't stop there, we've gotten all of our friends involved too. Boys and girls that we love to share. You just found all your fantasies in one site. So come check it out. We promise you've never seen anything like this.