You'd be surprised how many people miss that point. There's a "let's just use Tor first" approach some people use that really undermine their anonymity. I.E. Using plugins like Flash while browsing and even JS. In the West, that's usually not a big deal, but elsewhere, people's freedom could be at stake if they don't take adequate precautions.
This, I've often thought exit node operators should drop unencrypted connections and/or insert warnings into HTTP responses... but I guess that would only be done by less shady exit node ops and drive people who don't understand otherwise to use others.
