I have used Infolinks. It is no scam. They have paid me. But if you are to get a higher income your site's Alexa rank need to be less than 200,000. Otherwise they will pay you a much lower amount. But still infolinks appears to be the only in-text advertising company which pays for Asian traffic; also you can use it along with Adsense.
They pay via Paypal upon reaching 50$. It took me more than 06 months to reach 50$. But they paid it via Paypal. Due to the low income I removed Infolinks from all my sites and went on wth Adsense. Interestingly my overall income increased. It does not seem to be worth sending a visitor out of your site for such a low income, who would otherwise click on an Adsense ad (probably that was the scene in my case).
My infolinks account for Sept 2010
Paypal receipt