Social media, meaning digital technologies and platforms such as blogs, wikis, forums, content aggregators, sharing sites, and social networks like Facebook and Twitter, have profoundly changed the way that information can be shared online. Now, almost anyone with a broadband internet connection or a smart phone can share ideas, data, and opinions with just about anyone else on the planet. This change has serious implications for the way in which human subjects research can be conducted and, concomitantly, for the ways (...) in which such research may be regulated. This article explores some of these issues. (shrink)