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On other smaller networks, you will get 1 sales every 30-40 clicks but CJ? You can be sending them 300-400 targetted clicks but get 1 and if you're lucky 2 miserable sales.
Don't really know where the fault is with CJ lately. Used to be better before their upgrades. Probably due to the amount of parasitic partners they are working with and their 'improved' tracking.
As for allowing malware and the like, I think you'll find that in the past networks have being fairly relaxed about such activity but are now much more vigilant about stamping it out. There is a feedback loop which means that if networks allow malware, other affiliates will move over to competing networks or drop out of the program. Additionaly, malware generally produced poor quality leads/customers and so if a network allows for the majority of sales via this channel then the merchant may leave the network also.
A growing problem with tracking is still cookie blocking and/or removal either by consumers themselves or by the increasing # of anti-spyware apps that consumers are buying that flag, block and delete cookies. And of course we can blame that increase on the parasites themselves and others that serve excessive pops or promote activeX downloads that are full of malware. I feel a rant coming on... shutting up now.