I have a question:
If I setup a landing page in my domain and I am getting traffic from PPV to my domain's LP, do I still need to use only CPA offers that allow only PPV traffic or I can use any offer, I mean they can't know right?
Since the referrer for their site will be my domain right?
How can they know if it is PPV or PPC or even SEO?
maybe is a stupid question...
regards

Your landing page will be shown in the pop over/under, so the traffic is still gong directly to your site. I've seen some advertisers use an exact copy of their LP so users actually have to click through the ad to see the same page - which seems redundant but accomplishes what you need it to.

The thing about contextual traffic is that if an advertiser specifically says they don't want it, you're not going to get paid if you get caught using it. Your best bet is to always see if you can get approved for your traffic sources before taking steps to cover your tracks and just do it anyway.