Affiliate Url Cloaking

How do I cloak affiliate links in the destination URL? Avoid showing the address of the website with affiliate link.?
After masking, the starting address, the address still land http://www.nicheblogs.com/?hop=jim for example, showing that we can maintain the above address, so that is obvious that an affiliate link?
Hi there, the more invisible to your affiliate links is to use a cloaking service. This will ensure that your links do not look like affiliate links and also save you from the affiliate theft Commission, which can be as high as 300% in some cases. Martin
Cloak Your Affiliate Links