Are you saying it is worth it for the NY Times to advertise on the search term "NY Times"? I see examples like this all the time but it makes no sense to me. In fact, the only ad-links I click on are these.
You just gave me my first data point from the web site owners perspective ... that your traffic goes up enough for it to be worth it. Why do you think this is the case? I would really appreciate any insight on this!