It has been proven by Google that native advertising is what now generates the most sales. Facebook backs that up too, see that here: Only two ad formats delivered significant value: native & video.
I had to share this. In short, the customer funnel has been flipped upside down.
Consumers now make there decisions much earlier in the funnel than we except.
Read this, its every native marketers and content advertisers must read.
Note: Does not apply as much to content or click arbitrage and affiliate marketing or direct response.