Can anyone give me some insights into what is happening here?
I spend about £1000 a month on Google Adwords.
I decided to investigate click fraud and added a tracking code. This pops up a message when it detects fraudulent clicks after click 4 (when someone is clicking on my Adwords advert and then closing the window (or not) and clicking again immediately and repeatedly).
I fould it was happening in a lot of the content ads, but not on the search engine ads (suggesting webmasters were generating income for themselves.) I log the IPs and the individual computers used.
Anyway, I then decided to come off of the content ads, so saw my cost per day drop to about half.
Two days later, I noticed that my Adwords ads started to experience a much greater click-through ratio, bringing my cost back up to what it was before. The same ads went from a click-through of 2.4% approx. to a click through of 8% approx. My cost per day is now back to what it was before I came off Content ads.
No extra sales have resulted, so it started me thinking, and I looked at the server logs again. Most of the clicks seem to be coming from Google (but not through the Adwords ads on Google). How can there be clicks from Google that don't come from Google adwords (it just says 'Google', with lots of different IP addresses.)
The code is fine and everytime I check from whatever computer, I can trace Adwords clicks. So these are not adwords clicks and yet I am getting charged for them.
And how come if I delete a high click ad, my click through ratio soon (after about 36 hours delay) starts to go up for the remaining ads.... until my cost is back to the same.
PS: The website in question is www.waterfall-d-mannose.com
And who is doing these clicks?