I'm not sure if this a new product by the very talented Mr Jason Fladlien but it's one of the coolest things I've seen.
It's called Easy Redirect Script and as the name implies its purpose is to protect your precious affiliate links and redirect pages,etc.
It's very easy to use and just plain works. In fact, after watching the instruction tutorials I got up and running with it in a couple of minutes.
There are a couple of caveats that Jason warns about, such as the fact that some affiliate programs won't allow redirects but I think that they're probably in the minority. After all, what product owner doesn't want you selling their product.
Anyway, I heartily recommend that you check it out.
You can see it here (and yes, that is an Easy Redirect Script cloaked affiliate link):