The past few times I've visited fanfiction.net, if I browse more than a few pages I'll often get a pop-up asking a bunch of questions, and the pop-up looks like the only way to get rid of it is to answer those questions. When I look at the site at siteadvisor or avgthreatlabs, it has a green rating, but is often linked to sites that have a red or yellow rating. Granted, in today's economy free sites want sponsorship, but doesn't that approach seem like a sure way to get people not to visit that site?