How to drive trafic to a cashback site?

Hello

I recently opened a cashback site offering free DVD's and blu-ray movies. However I haven't been able to grab that much traffic to boost my revenue.

I have been thinking of using facebook ads by vouchers to boost my traffic a bit. Just remember my traffic needs to be good otherwize i wont make a cent.

Maybe I should mention that the site is only open for european users of one country at the moment.

So how should i boost the traffic to my site and my revenue?

Any suggestion is very much appreciated

Install a blog on the site, post maybe 50 articles on it and optimize it for google.