Wondering

I was wondering whether those sites that pay you to surf the internet or browse websites that sells shit or whatever they have to put online are the same people who set up websites to ask people to advertise. Like I have a marketing business and I invite you to advertise on my website for a cost and in return I tell you that I get like 100000 bla bla hits a day. Then on the other side of it, I have a website promising people 'money per click' sort of bullshit. Obviously to be able to ever get that 10 cent out of me you have to like click maybe a few thousand sites and that would take up to 3-4 hours a day. Whatever they call work-from-home at the comfort of your own butt-on-one-chair. So is it actually a scam?