Google surely knows what to show and what not, in order to give its audience access to accurate information, relevant and unique content and also the fines writers. Having great work on its algorithm, it continuously improves and delivers what best on the web. But, despite that, there is a flip side as well. It is when Google penalize your website because of some irrelevant content. Google always focus on promoting good quality content and eliminating the poor one at the same time.