If the program fits my demographics, and unless a program has a bad reputation among webmasters or players, and as long as their T&Cs and tracking are clean, I will give them a shot.
Then I watch, and if they show activity in a low spot, I try the next level, etc.
If I write and get no replies a couple times, I just pull the program. Doesn’t matter if they are producing or not. I want to be able to ask questions or discuss things.