I just set it to block all.

I suspect if the advertisers were that good, they'd be using AdWords instead of trying to sneak in the backdoor using one, or more, of these 3rd party outfits.

> trying to sneak in the backdoor

"advertisers from external Google-certified networks will be able to compete with AdWords advertisers for your ad space."

Seems they still have to pay all the same. Yes? No?

I blocked all of them just over 2 weeks ago because I saw a low quality ad on my site in the AdSense slot. My CPM dropped around 1-5%, so I have decided to leave it turned off as I don't have the time to check each new network out.

I like AdSense ads, if I wanted crappy low-quality ads on my high-quality site I would have signed up for crappy ad networks a long time ago.

Paying isn't the issue.

If I wanted those networks on my site, I'd sign up with them directly. I've rejected some of them already on a direct basis, why should I let them in as Google 3rd parties?

And I sure don't have time to look at every new 3rd party that joins the group.

I suppose the other side of that coin is that if a site wants to be part of one of those 3rd party networks and doesn't otherwise qualify, getting into their backdoor via the AdSense program might be better than nothing.

Not for me though.

Good points, thanks. Following your lead, off they go!

And they're back on. I need all the advertisers I can get.