Years ago I found one particular PPV program where ~99% of users were set to auto install whatever activex prompt came up. They obviously did that strategically or were using the same drive by download exploit I'd have. I'd never actually USE the exploit to infect, but I just kept buying 1,000 popunders for $1.00, hit em with my own toolbar and get like 100% installs. That's $450 for ever $1.00 and that $1.00 would be spent in like a minute.