So you really think that people pay attention? Try this test to find out how good your „attention“ skills are.
Amazing, isn’t it? Now imagine people are looking for something specific online on your webiste. Will they notice the ads? I guess, they will. BUT: only if they are relevant or related to what they are looking for. Another reason why(contextual, behavioural, etc.) targetting is crucial when attention is scarce. And scarce it is pretty much all the time these days.