Thank you, That's very useful and easy to learn.Hi justin71,
I've used url shorteners a few times but mainly when I've got a landing page setup with affiliate links within it.
In answer to your main question, because the order of the redirection is:
short url->landing page->affiliate link clicked->CPA offer
this would mean that they would see the landing page as the referrer.
Main reasons I've used url shorteners though is on twitter when every character counts.
Hope this helps answer your questions.
All the best.
Paul