AdSense click-thru value

suddenly dropped by 2/3 after several years

[donelson]

The AdSense click-value for my Google ads on my site have suddenly dropped in value by 2/3 over what they've typically been for the last 2-3 years.

What could cause that?

It looks like the same group of advertisers are still advertising on my site...

[europeforvisitors]

The topic of a sudden earnings drop was discussed in this thread [webmasterworld.com] recently. As always, the explanation boiled down to "your guess is as good as mine."

[donelson]

I will move over to that thread, thanks.

[donelson]

Maybe that thread is inappropriate (it says Aug 2007)

My trouble started 31 Aug and continues to get worse ---

The AdSense click-value for my Google ads on my site have suddenly dropped in value by 2/3 over what they've typically been every month for the last 2-3 years.
It appears to be mostly the same advertisers as usual, and the same number of page impressions, more or less...

Aug 2005 - range of 0.09 to 0.13 per click
Aug 2006 - range of 0.10 to 0.15 per click
Aug 2007 - range of 0.10 to 0.15 per click (except 31 Aug)

with 2007: Aug 31 to Sep 3 being in the range 0.04 - 0.06

So, I've never seen any drop like this at all!

The past four days are Very worrying.