Online Certifications Affiliate Program?

Hi all ,
I am looking to promote online certifications as an affiliate and still looking for the best company.
Found one expertrating dot com but i have seen a few bad ratings about them.
Any other companies that you can recommend to me?

Have you tried 360training ? I have heard they are the best and the leaders in online certification. I am actually myself searching for someone who has experience with this to find out different way to start this whole thing.