Anyone block CPM Ads?

[SilverSiR]

Saw that an advertiser has chosed my site to display their CPM ads, although flattering it seems to have messed up my bottom line. I'm thinking of blocking them seeing that I don't garner that much traffic to make CPM ads worth while.

[Rodney]

I think the way they were described, CPM ads can only increase your bottom line:
[webmasterworld.com...]

Could it be another factor contributing to the decline?

[elsewhen]

CPM ads can only increase your bottom line

google claims this because it calculates what you would earn per page with CPC and compares it what you would earn with CPM and chooses the higher model to use on the page.

all of that makes sense, but what if the very presence of the CPM ad (huge-font text ad, or image ad), causes your visitors to leave earlier than they would have otherwise, thereby dropping the average number of pages/visitor, and thereby dropping the number of impressions.

i wonder if google uses actual data to verify what its algorithm predicts.

sort of reminds me of the heisenberg uncertainty principle... the actual observation of something on the atomic level, changes it, and therefore observations of such things is subject to skepticism.

i have no proof of this phenomenon wrt to adsense, just stating it as a theoretical possibility.

[hunderdown]

email AdSense. At least one person had reported a similar problem, which was resolved after they contacted AdSense.

[AdSenseAdvisor]

SilverSir -

As stated on [webmasterworld.com ]:

The minimum CPM that an advertiser can bid on your site is $2 and their ads will only appear if your eCPM from CPC ads is less than $2. Basically our algorithm looks at your page and the overall eCPM it's generating. If there's a CPM advertiser who has targeted your site and is bidding more than your current eCPM, then we display their ads. So, you should only see an increase in earnings because of CPM ads.

If you've seen a negative impact on your earnings, sticky mail me with your URL and I'll have our product team investigate.

Thanks,

ASA

[SilverSiR]

Thanks, sent a message.

[europeforvisitors]

Maybe it's coincidence, but I'm making quite a bit more with CPM ads on my site than I was before the CPM ads began showing up.

One oddity: I occasionally see the site-targeted CPM ads on channels with eCPMs that are way above the minimum bid for CPM ads. So either the advertisers are paying fairly generously for those CPM ads or Google's algorithm is letting CPM ads slip through on pages that do well with CPC.

[Roadkill]

If my understanding is correct. CPM ads are banner types only? I have text links only in my set up and I should not get targeted for those. Is that correct?

[elguapo]

Roadkill, no. Site-targeted CPM ads come in the form of BOTH image and text ads, depending on the specifications of the advertiser. I have seen CPM ads in my sky (both regular and wide), in the leaderboard and large rectangles - the 4 ad units that I use.

Even if you have image ads disabled, CPM ads can show as text ads. As text ad, CPM ad fills up the entire ad unit -- even if you use 4-ad skyscraper, you'll see only 1 ad and that is the CPM ad. Sometimes it looks exactly like a PSA, and sometimes it looks like an ordinary Adsense ad (if this is the case, it looks a bit awkward since the ad unit will have so much white space or depending what your background color is)

[Roadkill]

Thanks elguapo

So we would have no choice, if they want it that way thats just it?

I havent seen one ad fill an ad space, but I have had just one ad in a 5 ad skyscraper, but when i refresh the others fill in again.

[elguapo]

The 1 ad in a 5-skyscraper ad unit that shows up in my site is the same ad that fills up the entire ad unit. It's like a variation of how the ad shows up