how to build list via PPC?

Ok if you want a quantity of people then offer something for free and to make up the initial cost you have to have a damn good backend. but there are a few tricks you can apply besides the usual auto email with affiliate links.

-product launches are a great way to build excitment because they are a new product and the product owner usually has loads of content to give to your list.

-have an ad for a relevant product on your thank you for subscribing page, you wil be suprised at how many sales are made.

-finally have a oto after they sign up, this method i fine is more effective than the ad on thankyou page. but this oto has to be very relevant to your free offer, think an advanced or full training to the free version.

you can also go for a quality list where you have a product that you sell for a few bucks. the idea is you want buyers on your list and a small amount of money will get rid of the freebie seekers because you are forcing them to get out their wallet (a powerful notion).

this should also cover your expenses, also think about cobning a low cost entry and a oto.

hope this helps

It depends on the niche and what the PPC costs are. If you can break even on the front end with your own product or an affiliate offer that's great as any commissions/sales on the backend will be pure profit!