Many affiliates have been slapped by Google and seen their page scores lowered or campaign not show up. This is why it is very important to find other sources for your PPC traffic. There are many PPC networks and it makes it tough for me to recommend any particular network. It’s all based on your campaign and where the network gets the traffic. This is why testing is so important if you want to make money online. As we all know Google Adwords can be very  expensive and competitive. This is why you need to try new traffic and try to match your campaign to the the network. If you can contact the PPC network ask them where are your ad’s going to show and how does their fraud click policy work. You need to find out as much about any network you plan on working with. Look for reviews online and see what others are saying. You want to get a solid number of networks that can convert. This is why testing is important. If you do not test a network you will never know if the traffic they send is quality. You need to at least spend $25 to $100 to kind of get a feel for the traffic. When you find a network that seems provide quality traffic increase your spending and keep monitoring to make sure the traffic continue to be quality. There are some campaigns that I run that have done very well on second tier PPC networks and it has cost me less to acquire a sale then it would with Google Adwords. The bottom line is you need to test traffic and fit the traffic to your campaign.