When running display ads as an affiliate, some metrics are more helpful than others. Click-through rate is important because it shows how many people are clicking compared to how many saw your ad. A low click rate might mean your banner or message needs to improve. Conversion rate is another key one since it tells you how many clicks are turning into actual sales or leads. Cost per conversion also helps you know if your spending makes sense compared to what you earn. If it costs more to get a sale than what you make, it may be time to adjust the campaign. Keeping an eye on these can help improve your results. What other metrics do you pay attention to?