Okay, you have a highly optimized PPC campaign, you are getting thousands of targeted visitors a day to your site. Now what?
What you do after the visitors load up your landing page can often make or break the long-term profitability of a campaign (or, in many cases, be the difference between a decent ROI or a great ROI - return on investment).
For some types of PPC campaigns (i.e., sending visitors directly to an affiliate site), you have limited options, but for many campaigns where the visitors are coming to a site you own and control, you have a lot more flexibility.
If you have a landing page that sells a product at a price (and conversion rate) where you can make a profit off the initial visit to your site, then you, well, are making a profit! However, the real cash usually comes through building a large opt-in list.
When you do that, you have access again and again to your visitor at, literally, the push of a button. Studies have shown that it typically takes seven contacts before a prospect will buy from you, but with a list, you can both follow-up with pitches for your initial product (for those visitors who didn’t purchase your product initially), or you can cross-promote other offers, affiliate offers, or even “upgrades” to your product.
One popular method for building an opt-in list is to offer a free report, eBook, or other valuable information to every subscriber. The irony of that is that not only do you get their email, but you can often put affiliate links or other sources of income in your report or other product to get more revenue. Just make sure that whatever you offer as a “bribe” provides massive value to your customers.
I know, I’m being a little hypocritical, as I don’t even have an opt-in form on my site, but trust me, I have them on many other sites, and in the meantime, feel free to subscribe to my RSS feed.

P.S. I am currently able to accept a limited number of additional clients for my PPC management services. Interested in increasing the profits of your website or advertising campaign? Contact me!