Final answer:
The keyword macro %k can be added to the Floodlight and Tracking Ad tags to track online ad performance, specifically for conversion tracking and measuring ad interactions.
Step-by-step explanation:
The keyword macro %k is typically used in advertising technology to track the performance of online ads. It is added into specific tags that register when certain actions are taken, such as when an ad is viewed or clicked. The two tags where the keyword macro %k can be added are the Floodlight and the Tracking Ad tags.
The Floodlight tag is used for conversion tracking and is implemented on the advertiser's website to measure and report conversions, such as a purchase or sign-up. The Tracking Ad tag is used within the ad itself to track interactions with the advertisement, like clicks or impressions.
These tags with the %k macro allow advertisers to track unique interactions and are crucial for measuring the effectiveness of their online advertising campaigns.