Google: 95% of users ignore warnings of bad site
According to Google security researcher Fabrice Jaubert 95% of users ignore the warning page that Google presents when they try to access a website that is likely to harm their system. It used to be that this warning offered a button which allowed them to proceed to the page, and it is this button that users clicked.Google thus changed the page so that users must copy and paste the URL.
We've long known that users will click through, presumably without reading, any dialogs or alerts that are in the way of them getting what they want. I think this confirms it.
Related article: A peek into Google's anti-malware operation