Most users of the internet aren't aware of security issues. They don't know what to do and not to do. If a window pops up telling them they have to install so

Most users of the internet aren't aware of security issues. They don't know what to do and not to do. If a window pops up telling them they have to install something, they do and that might be a trojan or malware or a virus, who knows... These types of popups requiring additional software be installed should never happen on the web. The user should have an instinct to click NO! and run away. This is a real problem for the web as a whole, not just individuals. Even if you aren't infected, you can be affected. Imagine all those zombies being used to DDOS your site or XSS attack it, that sort of thing. They are unwitting participants in the dark cloud that looms over all of us. Over-dramatic? I don't know... I think it is a serious issue.