Your ads can appear on 404 Error pages only if you've selected the Google ------- in your campaign settings.
Google Search Network includes..
Using Editor, you can: Circulate proposed changes to other people and get feedback from them before you post changes.
The Google AdWords Application Programming Interface (API) lets developers build applications that interact directly with the Google AdWords server.
---------- is our easy-to-use AdWords URL-tagging feature. You can use ---------- with Google Analytics or your own tracking solution to get detailed data about each click on your ad.