To immediately get to the point, my question is... I know I can not put on my site popunder ads for mobile and redirection, I mean, I can do that but I'm gonna get a penalty very quickly from Google... Anyway, is everything related to mobile ads not allowed and not good? Whether I will get a penalty if I let's say I put banner for mobile or direct messages on my site? I hope you guys understand me and thank you in advance for any answer.