> i.e if I am on a site reading about the latest hard drive to come out, Show me ads for a NAS or a Computer, etc. So, it turns out that you completely ignore

> i.e if I am on a site reading about the latest hard drive to come out, Show me ads for a NAS or a Computer, etc. So, it turns out that you completely ignore those adverts because you have banner blindness and you're on the site to read about the latest hard drive, not the one someone is paying to reach you with. If those ads worked, the CPM would be higher and advertisers would invest in those instead. But they don't, so contextual it is.