I am largely expecting to get negative opinions -- then again, I no nothing about how advertising network operate on a day to day basis filling inventory. I wa

I am largely expecting to get negative opinions -- then again, I no nothing about how advertising network operate on a day to day basis filling inventory. I was hoping I would catch the opinion of someone who has worked at or attempted to start an advertising network and has some experience. Mainly, how tough is it to fill ad inventory and how anal advertisers are about traditional vs. new forms of advertising? This is the sort of domain specific insight I think people on HN might have where others would not. Thanks for your feedback Daniel, I am going to take action on your advise in addition to the hope I can find someone with previous ad network experience here.