Inbound call tracking software provides phone numbers that can be assigned to existing and new ad campaigns either online or offline. As an affiliate marketer, you allocate the phone numbers among the ad campaigns that you have created for your clients. When people start calling, the software will generate analytical data for you. From this data, you will learn the number of calls, the duration of talks, as well as keywords that attracted the leads, and the price for one lead. By exploring that information, you can optimize your campaigns to make sure you have the cheapest price and the most relevant leads. Besides, you can increase the conversion rates and, as a result, manage your income.