Why can't I see all the ads that are shown with adtest=on?

[Soze]

I did a search using adtest=on and saw what was driving our cost up. But when I remove adtest=on, the ads don't show.

When I used a proxy to for the search, the ads showed fine.

What is causing google not to display all the ads on my local connection?

[Rehan]

That happens because of your search history. (See [google.com...] )

Clear your cookies and you'll see the ads just like you do with adtest=on.

[edited by: Rehan at 5:30 am (utc) on Feb. 27, 2009]

[Soze]

Ah. Thanks a bunch!