I worked with Webvork through Google Ads, and the conversion rate here is higher than with other affiliate programs. It's nice that there are offers for different countries, which allows for testing various approaches. I haven't had any issues with payments; the money arrives strictly on time. Yes, quality traffic is necessary, but with the right approach, you can achieve good income. The affiliate program provides materials for testing, so you don't have to search for everything on your own. The support is also top-notch.
