For a site like SO that is not purely commercial (i.e. not selling a subscription etc.) but makes money from advertising. If I were to insert an image in a comment or in the question description that is Creative Commons Attribution-NonCommercial and I also correctly attribute the image, because the site is making money from the content being viewed does this go against the license terms?
What if the main part of my question involved two by-nc images and very little other content?
For example, on gaming.stackexchange.com if I uploaded two by-nc images of joysticks and asked users to reply which one is best?