There's still a fundamental disconnect between people who use the web and people who use the web 2.0.Excellent advice.
The perceived importance and revolutionary aims of most web 2.0 apps are lost on the vast majority of web surfers. That doesn't make those people less smart, less hip, or less important than your more savvy users, it just makes them an audience you haven't reached yet.
Most people in web 1.0 land (a.k.a. the "Rest of the World") would expect your site to behave just like familiar destinations like Ebay and Amazon. People respond to familiar interfaces and functions. Throwing them a curveball will most likely result in confusion.
See also my previous post, "The mainstream and saving people time".