whitelabels are useful for co-branding by adding a cam solution to your website and promoting your brand. Even better: blacklabels!
If you promote models it is not a good choice because they want to be associated with the main sites.
Whitelabels are also good to circumvent cookie saturation since cookies are domain based.
I think sponsors ultimately want end users to move to the main brands so if you push to the main sites you increase retention.
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