Another very good source of leads is Co-registration. What is co-registration? Can you recall going to one of those high-profile, high-traffic sites like Forbes.com, and you decided to join one of their "investment tips" list?s. As soo nas you finish entering your details you are taken to another page where they ask you to take a look at some of their partners' offers, like opening a free stock trading account, etc. That is co-registration!. The so-called partners paid Forbes.com to appear on that page if you just click the check mark, Forbes forwards the exact same opt-in information you gave them to those partners, and when you receive info from those partners, you can not treat it as spam, because you voluntarily opted in. Though co-registration leads are not as hot as direct opt-ins, they are still very good leads to work with!. The downside is that getting them from such high-profile sites can be very expensive. I know of a site that offers co-registration campaigns for $399/month, but the number of leads you get can be very huge as much as 5-10,000 per month. If you have the budget it's sure worth it.