There are three campaign parameters that are recommended to manually track campaigns: reach, frequency, and ad spend. Reach refers to the total number of people who see your ad. This number can be affected by a number of factors, including the placement of your ad, the type of ad, and the targeting options you select. Frequency is the number of times your ad is seen by a single person. If you have a high reach but low frequency, it means that your ad is being seen by a lot of people, but not ...