Strategic Marketing
Now you do know which part of your advertising pays?
Quantifying marketing is often a difficult thing. By counting traffic into your stores you have direct evidence of how successful you latest campaign is.
You can track the performance of each promotional activity, measure response to advertising and put hard figures against each initiative to see what slice of pie you're winning and to what extent your advertising is driving traffic through the door.
And it's a fail-safe way of justifying your next campaign.