We all know about the pay per click ( PPC ) advertising system. Now the question is how does it work? Do you have to pay money even if you do not get clients? Yes, if you use the pay per click advertisements for your business web site then you are supposed to pay money without having any clients. Just like the name says – it’s paying for each and every click to your web site from another web site. Or say you have to pay for every visitor that will visit your web site from another web site through your free ads.