Have you tried adding them to the list of advertisers you don't want showing on your site?

That's what I'd like to do, but the first step is to get the preview tool to show me what URL that they are going to, isn't it?

First off they are sending traffic to multiple domains, according to my click-tracker...but those are display URLs.

Secondly the display URL and the actual URL differ... so I need to either click on my own ads and hoe that they don't redirect so quickly that I can't see the ad's URL or get a preview tool that will show more than 8 potential ads for the page.

Clearly this advertiser has gone to great lengths to make it very difficult for publishers to filter his deceptive lowball high CTR ads. He or she wants to bring my visitors to a deceptive site and try to take advantage of them. That's just not fair.

If the ad is showing within the preview tool, you can click the check box within the tool so that the ad url displays.

I never use the display tool to get the "real" url of an ad. There is a much more direct way of doing this.

CAREFULLY (making sure you don't click on it), RIGHT-click on the title of the ad and click on "Properties". Scroll through all the code in "Address" and find the part that starts with "adurl=".

That is the real url. Make sure you only add the "domain.com" part to your filter list, don't filter it as "www.domain.com" because they might come back with a new url something like "abc.domain.com". The first way covers them all. Don't add any of the stuff after ".com".

Then be patient. It can take from a few hours to sometimes a day (or more) for ads you added to your filter list to stop showing on your site.

And if you'd like to follow the chain of redirects, get a copy of wget ('nix or Windows) as it's typically very good at not only showing you the redirects its following, but naming them as well - so you can quickly see the entire path your request is taking.

Thanks fredw and toomer. Exactly the stuff for which I was looking.

Happy weekend.

Fred, that is the method of choice for me, however as you mentioned when trying to lift code off an actual page, it needs to be handled very cautiously to prevent unwanted clicks

For those who use Firefox:
1. install Web Developer extension. It will provide a lot of info about links, css, forms, images, page cookies, etc.
[addons.mozilla.org...]
2. restart Firefox
3. right click on the page. Go Web Developer -> Information -> View Link Information.

This will open new page listing all the links you have on the page, including google ads. Search for "adurl" to find the target.

If you afraid of clicking a link then select all (Ctrl+A), copy to clipboard, and paste into your favorite editor for analysis.