Building an opt-in list

We are in needs of building opt-in email list We are planning to receive 10000+ opt-in list on how to make money online. I'm paying only per leads(enrolling in the list). Currently, I'm running a campaign on how to quit smoking, [login to view URL] I can provide you a customized link for opt-in list registration form using aweber. Suggest me some ways on how to build an opt-in list.