I used to promote them on many of my sites and I did quite well when they were named VideoSecrets many years ago. Nowadays I send them little traffic and the conversion rates are nowhere near as good as on the Chaturbate but I still make some small income with Flirt4Free and they keep helping me pay for my hosting bills, but that is about it.
If you want to promote adult cam affiliate programs then, by all means, join the CrakRevenue platform so you will be given a permission to promote the best live offers in the one place (for the one payment).