Using eCPM to compare adult ad performance across platforms can be helpful but has limits. It shows how much you earn per thousand impressions, which makes it easy to compare platforms. However, it doesn't tell the whole story. Some platforms may have higher click-through rates or conversions, which eCPM doesn't show. For adult ads, user engagement and the platform's audience matter a lot. A platform with a smaller but more targeted audience might perform better than one with more impressions but fewer clicks. Also, some platforms may have different rules for adult content, affecting ad placement or visibility. Look at other metrics like click-through rates or actual revenue alongside eCPM for a clearer picture. Testing ads on different platforms and analyzing results can help you decide. What are your thoughts on using eCPM for adult ad performance?