Enter a false destination URL - that is, what appears in the ad is not where it goes.
Sometimes it is blatant, nothing like where it ends up. Sometimes it is sneaky, with a v instead of a w, or a .net instead of a .com, and so on...
Regardless, the big problem for those of use who are following the rules like good little advertisers, is that they are getting away with it. It appears that to stop this practice requires manual checking, and the Adwords team are either not doing it, only randomly doing it, or cannot keep up.
Rob.
Thanks for that info, Hugh. I know just enough about pHp to run my osC cart, so I didn't even realize you could use it for something like that.
I'm glad to know, though. There's only one other affiliate that promotes the same company for my keywords, so I'd (selfishly) hate for others to sneak in. :)