Other examples are very context dependant, but you will often hear comments such as “I think the navigation should be at the top because other sites do that”, when you know that the problem they had was due to the sheer number of links and the design of the navigation, not where it was.

It’s the usual things you find from usability testing (where observation trumps self-reporting every time), but with some of the newer accessibility oriented services, you don’t necessarily have the rigour that experienced usability people will bring. That’s why I’m sceptical that regular site owners will have the best information to make decisions with.