Not sure, but I think CPM is based on the value of the ads displayed on your hubs, so if you write hubs about topics that have valuable advertising and they get sufficient traffic, I think you would increase your CPM.
Do you mean for Google advertisers?
If you do, then the answer is: Yes, and no.
Since Google reworked it's system of displaying ads to surfers, some ads are based on the search history of the user, NOT the content of your page. So if a searcher was looking for "New Cars" and clicked on a search result, then found a link to your hub about cooking from a link on the Hub network, the ads on your page very much may have to do with cars, not cooking. So the answer for this part of your question is you can't control the CPM rate, or even the subject matter of the ads on your page.
The "Yes" part of your question is that if you write about high CPM topics and the user finds your hub through Google, then those higher priced CPM ads MAY be there.
If you want to increase your ad revenue, the best thing to do is to write good and useful content in a subject area that requires additional purchases (ie, reviews for products) and to create organic backlinks to your content.
Backlinks increase your Google PR and also help to insure that uses are actually actively searching for the topic you are discussing.
Concentrate on creating hubs based on high earning keywords. That should do the trick. But always remember, having merely high CPM doesn't mean more income. It will only work if paired with a considerable amount of impressions. That's the challenge since high paying keywords are often those that have high competition. Good luck and God bless!
by Dilip Chandra3 years ago
Update - 6 hours ago. I see no increases after the new layout was out. Then, the traffic updates freeze. Now the update i can see, 6 hours ago and the traffic crashed badly. Adsense CPM too gone low after the new layout...
by Andrew Stewart5 years ago
Would you rather have 1) High hub traffic 2) Great Google Rank 3) High CPM or 4) Top grade content?
by 2uesday7 years ago
because of the new ads. they were testing on the site before the Google changes ? Or are they too big (Google) to care about the other ads here or maybe Google search and Adsense are not 'connected' in...
by The Write Life9 months ago
Pretty frustrating when I get a significant traffic spike only to see CPM values plummet. My Google Analytics stay steady for the most part as far as page time, bounce rate and things of that nature. Why does this...
by Paul Edmondson6 years ago
We have always cared deeply about providing the most rewarding place for people to publish online and we continue to work on improving overall monetization for your Hubs. One of the benefits that the HubPages...
by Paul Richard Kuehn4 years ago
How can I increase or influence my CPM earnings in the Hubpages Ad Program?
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