Welcome to WebmasterWorld Guest from 220.127.116.11
CPC is just the result of dividing earnings by clicks (eg $250 earnings/500 clicks = $0.50 CPC). A falling CPC must mean lower earnings so advertisers must be paying less. Right?
That is also my experience. Higher CTR days = higher EPC. Lower CTR days = lower EPC.
Same thing. I had a record number of clicks last month but my earnings in February were down compared to January, and my January earnings were down compared to December. Page impressions and clicks continue to go up, but the average amount for each click continues to go the other way.
Often when I log in, the total has gone down from when I last looked. This has always been the case periodically, but now it is happening several times a day.
I guess that Google must be trying to protect advertisers more than it does publishers.
There is another problem. Often when I log in, the total has gone down from when I last looked...
My assumption is that if two clicks come from the same computer within a certain time period, then one of the clicks is invalidated by an algorithm.
Whenever I see 2 clicks come through from the same ad at the same time,
... I'm no longer surprised when half of the revenue is removed 10 minutes later ..
Rightly so, because the person double-clicked the same ad.
Some jerkoff click-bombed me the other day, 16 clicks to the same ad.
2 clicks come through from the same ad
half of the revenue is removed 10 minutes
This is interesting. Earlier in this thread someone else posted about someone clicking their ads more than once from the same computer in a short period of time.
If this sort of thing can be determined simply by looking the stats I'm interested in learning how that's determined.
"Although the intent of a click is difficult to determine with a high degree of scientific accuracy, we try to identify suspicious clicks as often as possible and to exclude additional clicks which we know will perform poorly for advertisers. By casting a wide net, we try to maximize the amount of invalid clicks that we exclude, which helps us to deliver consistent and high-quality traffic to advertisers."
I have determined over time that clicks emanating from any IP that is remotely connected to a US based educational establishment (school districts, universities and/or colleges) get logged in adsense stats but no revenue is earned. The same applies to clicks coming from various other countries, notably India, Phillipines and Indonesia to name but a few.
But they leave the click in your stats but remove the revenue.
Most of my revenue has come from Link Ads. I think that once a user gets the list of links, they often click on several to find something useful. When this happens I only get paid for one click, or maybe none. After all, Google only pays for clicks that perform.
(Don't forget that on link units, you don't get paid unless there's a SECOND click)
If a user clicks on an ad and then clicks on another ad 30 seconds later, it is unlikely that the first click 'performed' for Google and the advertiser.