Educate yourself about business opportunity
You will be able to see reports on your clicks, sales and conversions on whatever campaign you are running. You will be able to easily see which campaigns are generating sales and which ones are not if you use affiliate software to track it. Maybe your Overture campaigns is doing horribly compared to your Adwords campaign? The campaign that is doing the worst can then be worked on and improved. You can then check out your improvements by using your affiliate software to see if you were successful in your attempts to improve that particular campaign that was doing so bad. Another benefit of using affiliate software is that you will not have to include multiple tracking sales codes.