Best PPC network on my site

i have a ebook site, and i want a ppc network… i use adbrite (but is a problem whit them and the ads don’t appears on my site), ity.im (are great, pay 0.12$/us click), chitika, also great, in 5 days i have +63$ and clickbooth, in 5 days i reach 75$, and infolinks (8 clicks=1.23$/day)… and, now i want another ppc network (no adsense please), whit payments in paypal please

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