When it comes to testing adult traffic, both Smart CPM and CPA offer different benefits. Smart CPM gives you more control over your bids, which helps when you want to gather data quickly. It's usually cheaper to start with, especially when you're testing creatives and trying to learn which ads work best. CPA, on the other hand, focuses more on conversions. It only charges you when a user completes the action you want, like signing up or buying something. But if your offer doesn't have enough conversion data yet, CPA might not perform well at first. Many people start with Smart CPM to collect data and later switch to CPA once they know what works. It can also depend on how well your landing page converts. What's your take on testing traffic with these two options?