The volume of bad information on the Web is staggering. In the 1990s and into the early 2000s email users were deluged with chain emails making medical claims that with little investigation were nearly always proven false. Today we have social media doing the same thing but with much more rapid proliferation. It might be tempting to take things at face value when your friend is sharing it, but every medical claim on social media or blog sites needs investigation. If your friends (or strangers) are trying to persuade on social media, demand references. Go to sites with more established reputations when you are confronted with new information that seems shocking or amazing. Unproven conspiracy theories and pseudoscience abound on health-related sites, including anti-circumcision sites. These sites are fooling or frightening millions of people every day. You may choose to circumcise or not circumcise after learning the facts, but we don't want you to get caught up in the hysteria about circumcision!