Yeah, even those these suckers will give you brain farts if your IQ is higher than mud, fact is, they do convert. And study the pages on the big guys' sites. Those things have been optimized up the wazoo and they know what they're doing.
Copyrwriting isn't about educating people - it's about inspiring such a strong emotional reaction and lust in them that they absolutely must buy your product NOW.
Sites that do that successfully always convert.
Dan