Google Adwords Affiliate Policy

Is it allowed to directly use an affiliate link as the destination URL in a Google Adwords campaing?

1. Google allows it
2. Google does not like it
3. Google tries do make it harder
4. Google displays only one affiliate domain per search result page

Steve @ webmasterworld forum:

Let's say you're an affiliate and you get the domain affiliate.tld.

Your affiliate link is example.com/affilate/123.

For tracking purposes you set your AdWords destination URL to
affiliate.tld/?source=AdWords
which then redirects to
example.com/affilate/123.

(This is a good idea for serveral reasons, one being that you can track the clicks, with the query strings, in your logs, and another being that you can change your affliate link without changing your ad, if your affiliate ID changes for some reason.)

In this case, you must use a display URL of example.com, because this is where the browser ends up after clicking the ad.

One reason is to give the user what he expects, and another reason is that if there are multiple affiliates of example.com all using AdWords, then only one will appear in the results page.

An example of what is not allowed is to use your own domain affliate.tld as your display URL, even if it is the destination URL.

http://www.webmasterworld.com/forum81/5576.htm