I occasionally see an Ad above a question, and it seems to be a native Ad (not powered by Google AdWords). Is there a way to advertise (paid advertising) on CrossValidated? I could not figure out how to do it.
If you look at the bottom of any page (including this one), you'll see links that are grouped into thematic columns. One such column is COMPANY, and one of the links underneath it is Stack Overflow Business. If you navigate there, you'll find a section FOR MARKETEERS. Beyond that, there's a bunch of different stuff that you can explore.