Here's my experience with "free" or "no deposit bonus" promotions. In my experience, the conversion rates are very low. For normal targetted traffic I average about 10 clicks per sign up, and about 6-7 signups per depositing players. For the "free" or "no deposit bonus" traffic I get lots of sign-ups, with 0 real depositing players. Maybe it's happened before, but the conversions were dismal. The good thing about these offers is that they do attract a lot of traffic. This increase in engagement sends strong signals to google search algos, giving you a higher authority site. So, I would promote them for the
SEO benefits, also recognizing very low conversions. Please let us know if your experience is different.