Where would you spend your Ad money?

Here is some numbers for you first & then answer the question in the title.
Circulation of newspaper in USA:48,4 million/month. So, I would say if you advertise on every news paper in USA you might reach around 50 million person.
People that watch TV in USA:285 million/month. This is by far is a much bigger audience than the newspapers.
Searches on the internet:14 billion/month!!
So where would you spend your advertising money if you are a offering a product or service? and did I mention that every cent you spend on advertising on the net you can measure & know exactly what is the ROI on that cent.
I think every company,person,product or service should thank Al Gore for inveniting the internet!