Hey guys,
I've started sending some decent volume to an offer and wondering ifI should spread out the traffic to the same offer but across different CPA networks (to reduce risk of offer getting pulled etc)? I am aware that conversion rates vary from one CPA network to another but risk wise worth it you think?
It's always good to spread your volume, just depending on how you manage your budget make sure you still hit the weekly payment requirement on each one.
Given what's happened recently with some major CPA networks it would be wise to put your eggs in several baskets 
Mehdi
It is smart to diversify.
But I would also let the network answer your question. "Is there any advantage of me running 100% of my traffic here?" See if they can offer you any incentives.
I'll be honest - I encourage affiliates to split test across different networks. If you are getting a higher EPC elsewhere I'd love to know about it. It allows me to keep on my toes and make sure everything is working properly on our end, or that we have the best source for a specific offer, the best landing page etc.
As far as hedging your risk of non payment - work only with networks you trust and keep your ear to the ground about troubles going on with your networks of choice.
I'm with Cooper - I always encourage split testing with EPC's - I'm very confident with mine. We work direct, most don't, and sometimes even two direct networks one will have a higher EPC. I honestly want my publishers making the most money, with EWA or not. They're not chained to me.
... to say the least, I have a high "retention" base though. EPC's go up and go down on every network, the rule of mathematics.