A new form of black hat SEO has emerged. Web sites have popped up that sell clicks on Google's +1 button. For a fee, Web sites can get anywhere from 50 to several thousand unique clicks for the +1 button on their site. But wait before trying to go against Google's guidelines. Michael Bergbauer says that long-term it could be "detrimental or disastrous." For companies willing to go against Google's guidelines, buying +1s for a Web site can have numerious negative outcomes, such as lower quality scores and delisting the site in Google's Index.