I suspect if there is a relationship, it's not very nefarious. More of a "Hey, you like us and have some popular games using us. We'll give you X dollars to write more of the same posts you already are." type of thing. I don't see anything particularly wrong with that (the best promoter is someone who believes in your product), but when more control over content is asserted, that's when it becomes fuzzy...
Also, the blog's author sounds just like "I'm earning $10000 a month, click here to learn about it" ads. I suspect he is in collusion with yoyo games.