Is there a good term to describe the symbiotic relationships that we see so often between media (broadly defined) and the subjects they're covering? I'm thinking of how TMZ tends to give Bieber favorable coverage and Bieber gives TMZ exclusives and more access in exchange. I'm also thinking of how a member of the elite might pay an author (through access or simply money) to write a favorable biography about him or her. My best attempt would be media-subject entanglement, or something to that effect, but I'm hoping maybe there's a preestablished term for it out of the journalist or communications literature.
An example sentence: TMZ's relationship with Justin Bieber is a good example of media-subject entanglement.
PS: I don't actually care about TMZ and Bieber. It just came to mind since I read a great New Yorker article on TMZ recently that covered it.