What are the weaknesses to this approach?

Analysis
Now let’s test your ability to think critically. This is also a small writing assignment.
Our company’s approach has been to divide advertising efforts evenly between web banner ads and email ads, and to give each region equal levels of resources. What are the weaknesses to this approach?
Also, what changes would you suggest to our advertising plan? For example, should we stop all advertising in the North? Concentrate on web banner ads of books in the South? Stop using Paypall? yadda yadda
Write your answer in paragraph form. Be sure to include all pivot tables or other charts that you used to help make this decision.
Grade will be based on: correctly identifying the problem, identifying any assumptions, quality supporting data, clarity of conclusions.