"Curious or stupid?" Nah. I'd say most of 'em probably thought it was a joke of some kind and clicked to find what the punch-line was.

Anything so blatant is probably not going to be for real. If someone wants to infect your computer they're probably going to try to trick you by offering something desirable, not tell you up front that they're going to infect your computer. "Stupid" is clicking on a link to a "FREE photo of Britney Spears' tits!" and getting a virus instead.