It is very important to know that which pages / sites are
generating good Adsense revenue and which are not. We can work
upon those poorly performing pages. If we can get to know about
which ads are being clicked, that would make us feel more
informed for many obvious reasons.
Currently Google does not provide this data. But you can still
get it from a very nice and detailed free web stat service, Add
Free Stats.
Add Free Stats provides a very detailed web stats which
satisfies most webmasters. You may open a free account at : http://www5.addfreestats.com, get the code and paste it at the
bottom of each of your pages.
Make sure that in 'Your Account' section you mark 'Yes' for
'Exit link tracking'.
Now check your stats at Add Free Stats, and you will find a
"A" icon beside the visitors' ip. That means that visitor has
clicked on an Adsense code. Place your mouse over the icon, and
you can see which ad has been clicked.
You can also generate a separate report of pages that have
generated Adsense click. Select 'Exit Links/Adsense' from the
drop down menu marked as 'Pages'. Here you get a folder icon
named Adsense, the number of Adsense clicks etc. Click on the
Adsense folder icon and you get the number of Adsense clicks on
each page and which ads are clicked on that page. Click on the
'hour glass' icon and you get the CTR, PV too for each page.