Observant users of Google’s AdWords Keyword Tool have noticed something odd in recent days — when you do an exact match search on certain terms, the volume reported is zero. Surely someone has been searching on terms like wine, iPod, and dogs. Indeed, a Google spokesperson confirms that it’s a bug.
Tedster, you are right some time Google adword gives some false result i got one KW name is "custom website development" i have good ranking from this keyword then also i did not get traffic and Google AdWord gives search volume 5000 plus then how it possible ?
So We are working For Google so we have trust on Google.