Network neutrality has been a very sensitive topic of discussion all over the world. During this talk, we will first introduce the elements of the debate and introduce how the problem can be modeled and analyzed through game theory. With an Internet ecosystem much more complex now than the simple delivery chain Content-ISP-User, we will in second step highlight how neutrality principles can be bypassed in various ways without violating the rules currently evoked in the debate , for example via CDNs, or via search engines which can affect the visibility and accessibility of content. We describe some other grey zones requiring to be dealt with and spend some time on discussing the (potential) implications for clouds.