Why not test ads on several networks and see which offers the best ROI?
Oh, and welcome to Webmaster World.
that's the general opinion I hear, that Google content network is full of fraud clicks.
You probably hear that because Google is by far the leading PPC ad network. It's like search: You'll hear more complaints (and more talk, period) about Google than about Yahoo and MSN, simply because Google dominates the search market.
My feeling is that market type plays a big role in whether or not a campaign is successful (some markets perhaps attract more fraud). Anyone like to comment? Pricing and tracking are as always obviously important, as is extreme diligence towards selecting/de-selecting sites for your ad to be displayed on.
You can confirm EFV's comments by viewing how active the Adwords forums are compared to the other PPC players. Though I suspect the Adcenter forums will get more active as they increase their market share (or introduce a quality score:)
Also, in other threads, several advertisers have mentioned not being able to get enough impressions from the search network. In such cases, there's obviously a greater incentive to try the content network (and to learn how to use it effectively) than there is if there's no compelling need.
europeforvisitors: Quite a while back, somebody here made the point that not using the content network was like leaving money on the table. His argument was that, even if his ROI from AdSense wasn't as good as from the search network, the additional sales still represented an incremental gain in sales and earnings.
LadyLady: So, just wanted to hear first hand experience. Thank you for your response.
LadyLady, as Europeforvisitors is a publisher on the content network he naturally thinks its worth advertisers using it ;-
Not necessarily. As I suggested elsewhere in this thread, it's worth testing the various content networks.
it could be a good way to get your feet wet on the content network... i think that the minimum cpm bid on the content side is $.25 per thou? but it's also dependant on how much the keywords in your sector are worth... it's rare for me to see site-targeted cpm on my adsense sites, because nobody wants to pay the sustained rate it takes to beat out contextual adsense.
so the only banner advertising that i publish is for affiliates, or it's related to rich media... and the latter pays very well.
so what's cpm worth to you? balance it out against the click fraud that comes with contextual ads on the content network... monitor the heck out of everything you do, start out small, use the exclusion filter... there are plenty of honest publishers out there, with quality sites, and we want your business.
As rbacal points out in that thread, the content network allows blocking of specific sites, but there's no such provision for the search network.