impact on earnings

Although I do not have any precise figures, it seems obvious that many publishers continue to join AdSense.

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If the growth of advertising inventory on the publishing side is growing faster than demand on the advertiser side, there is clearly going to be somewhat of a dampening effect on earnings for publishers. If advertisers sense that there is lots of suitable publishing inventory available, they will bid less.

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Although I have just recently joined AdSense, it seems that this has already been at work over the last couple of years of AdSense. I have read innumerable posts from publishers reminiscing about how they used to have a much higher EPC.

It would be nice to see some detailed historical data on how returns for AdSense publishers have changed over the course of time.

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Regarding my own site - CTR has been lower but EPC has been much higher over the last couple of weeks. The increase in EPC has sharply outweighed the drop in CTR resulting in a higher ECPM. I have no idea as to what has happened - too many variables.

I do not put too much stock in these short-term trends at any rate. I have seen a lot of ups and downs in various areas in just four months on AdSense. I will only get concerned if problems continue for an extended period of time.

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For me, AdSense remains the best option for monetizing my site. It requires a minimal amount of intervention on my part and allows me to spend the maximum amount of time producing content.