CPC in google.com is very high. But I can display ADS also in content network. But what is conversion level from "normal" websites ? CPC will be low, but quality ?
I make heavy use of negative keywords to keep out some of the lowest-value traffic from the search/content networks.
The quality is very low - you'll get low cpc, but very low ctr and low conversion rates in most cases. The content network has its own quality score though, so a low CTR on this won't affect your 'main' QS. Having said that, I generally don't use the content network
To be honest, it is much more effective to target your audience when using google adwords. This will allow you to place your ads exactly where you want them to be and will increase the success of your ppc ads. I am part of a club that teaches the right ways to put up your ppc ads and get the most bang for your buck. If you want more information, don't be shy to shoot me a messege and I'd be glad to help you. -Feen