How to follow up Adwords efficiency?

Which is the easiest way to check whether my Google Adwords campaigns
are efficient (worth the investment) or not?

I'm looking for an easy way to do it. I coded a PHP script which put the
IP adress in a mysql database, but isn't there an easier solution? If I
use that script, then I have to rely on the database being up. In addition
I don't have a graphical front-end for the database. And it requires some
additional coding to retrieve the ip adress for the purchases made and
check how many these ip adresses that are stored in the database of
clicks (= are results of the campaign). It's very basic. Just a "hack".

Isn't Google providing anything? I remember that I have seen something
on the Adwords pages, which can be used to track the clicks. Has anyone
tried it? How does it work?

I'm just considering different alternatives. Please give me your thoughts.

Mike

Google Analytics offers reporting broken down by Search engine, organic
vs CPC etc.

May well be worth looking at this as this would solve a lot of the
problems you have mentioned.

Mike wrote:

Which is the easiest way to check whether my Google Adwords campaigns
are efficient (worth the investment) or not?

I'm looking for an easy way to do it. I coded a PHP script which put the
IP adress in a mysql database, but isn't there an easier solution? If I
use that script, then I have to rely on the database being up. In addition
I don't have a graphical front-end for the database. And it requires some
additional coding to retrieve the ip adress for the purchases made and
check how many these ip adresses that are stored in the database of
clicks (= are results of the campaign). It's very basic. Just a "hack".

Isn't Google providing anything? I remember that I have seen something
on the Adwords pages, which can be used to track the clicks. Has anyone
tried it? How does it work?

I'm just considering different alternatives. Please give me your thoughts.

Mike