While browsing some series and looking up their info, I was suddenly redirected to some page telling me to buy McAfee software to prevent malicious viruses (or something like that, I didn't read too closely). This happened twice in a row, about 5 minutes apart. I only had a single tab open on my web browser, so I'm pretty sure it was an ad on Novel Updates that redirected me. EDIT: Happened again, took a screenshot. I'll note that although I have ad-block, I have it disabled for Novel Updates.