question about CPA registration

When I'm registering on any cpa site, I must respond to question "web" where will be that content. Ok, so what if I have a lot of webs with lots of niches? Can there be one of them? Or how is it with that question?

Regards

Dear Sol42,
Could you please clear your question? Actually i don't understand what you are talking about. Please write down step by step clearly. So that i can answer you.
Thanks

Ok,
I have a few websites where I will be using CPA. Can I put only one of that websites?

Sure you can, that's just a way for them to have an idea of where you're gonna use their network, it's also a way for them i guess to see what kind of thing you're doing. But honestly they're not even able to verify that's really your website. Just put your best looking site and it will work for that part. But don't post a landing page where you promote generators and things like that of course.