I actually hold the opposite opinion. I think hidden services are more dangerous than clearnet sites, because the operators know that the people visiting hidden services have something to hide. Do you think that operators of google.com, hotmail.com or cnn.com give a shit about people coming from exit nodes? Someone running a hidden service has a reason to be much more interested in their visitors' identities. I generally browse hidden services with NoScript enabled, but I browse clearnet sites with NoScript disabled, 1) because blocking javascript breaks 80% of clearnet sites, and 2) because I figure they are far less interested in who I am. Even sites that make money through advertising and tracking, they can trivially track 95% of their users with cookies. They don't care about the people behind proxies.