Is adsense and Infolinks are the best combination for the internet cash. And using the Adwords for the traffic
In my Point of View, Better dont use infolinks in your Website... Becoz infolinks Ads will pay very very Less, when compared to Google Adsense........... You Can use Google Adwords for your Website, Its the Best Idea to get Targeted Traffic...........
I dont suggest to use two PPC advertising ads, better stick on one of them And you gotta be good in adwords if you plan to drive traffic by using adwords or you will lose big money
You can use Adsense & Infolinks together, but it's up to you. Some people's earnings have doubled using both of them.
Personally, I dont like info link ads. They are annoying, and most of the ads they display are totally unrelated with the content you are browsing. For example matrimonial ads for a technology blog etc.. I suggest you keep infolink ads for some time and check the earnings.