White Labels perform best with your own network traffic and preferably; as part of a pay site or some strong paying customer source.

There is also the question of member databases and how they might influence conversions.

Our own policy is that if the person buying is a member at one of our other network sites any rev-share goes to the original referrer in the case of an site affiliate, other White Label affiliate or the site owners' ID should it be a house customer. We attempt to prohibit "customer poaching" to the greatest extent possible.

Network traffic in with supplemental ad buying traffic will work well with White Labels and as was said above; White Labels have no branding out-of-the-box. Hence, the need for your own network traffic.