yes you can use it. I know of kontera and chitika linx (if that still exists) I would say that infolinks and kontera are about the same earnings, despite infolinks saying everywhere that they pay the most, yes and my sites are the best, easy to say.. Chitika linx was a total failure when I tested it and compared it with the two others, two years ago, don't know how they perform nowadays if linx still exists..
I suggest stick with Google Adsense. I mean if not, your earnings will be divided in to Adsense and infolinks account. It will take more time to reach the payout. But do not depend on Google Adsense. We can't say when our Adsense will get disabled for invalid click activities or other reasons. We can't control invalid clicks easily.