Birla Sun Life Insurance and BIGFlix Ads on copywriting blog

Are you surprised to see Birla Sun Life Insurance and BIGFlix ads often on this copywriting blog? So am I.

Well, I am quite conversant with both Google Adsense and AdWords. Precisely the reason I fail to understand why do I get Birla Sun Life Insurance and BIGFlix banner advertisements on this blog. Perhaps, Google is considering my blog ID and displaying the BIGFlix ads since I have a couple of movie blogs. But that should not be the case, right? Hope the advertisers are not on PPM model.