A question

[Digi_Lord]

Now I am not sure if this is the right place to post this but it seemed close enough. Due to past experiences I have become slightly paranoid about clicking on site links, especially ones that have specifically sexual material. My question is thus, does anyone know of a site or program or something that can go to a site and then tell you if it would download any harmful programs without you realizing it.

Failing that I would like to know how all of you go about visiting sites and determining if they have viruses and such while keeping your computer safe.