Having Trouble Finding An Ad Network

Here's some background on my experience and what I have tried.

Experience: Google Adsense/Youtube revenue. Up to $5000 in a year.(at its peak)

Goal: Affiliate Marketing. I'm dabbled with it before but right now I am series with it. I want this to be my primary source of income.

What I'm doing: Using Clickbank to pick products to promote. Using PPC advertising so I can avoid website maintenance/creation/hassle.

Ad Networks I've tried: 7Search and Jema Media.

-With The 7search campaign I set a budget of $50 with a CPC of about $.10. Overnight my ad only got about 450 impressions and 0 clicks. I stopped it in order to try a different ad Network and product.

-Jema Media. Here I have run a $25 Campaign for a product with a 0.0080 bid. (Affilorama if you must know). My campaign has gotten 50k impressions, 3.4k Clicks with a CTR Rate of 6.8%. This all adds up to 3,544 Hops On Clickbank and exactly 0 Sales.

Now, Jema Media did not allow me to target specific keywords. I have a theory that his has a lot to do with my failed campaign.

Here is where you experts come in. What Am I doing wrong? Am using a bad Ad Network? Am I bidding too low? Has anyone had success with Jema Media?:confused: