It is a good idea to hide and shorten your long affilate urls to make them look unique and individual. I will hide 10 of your affiliate links for $5. I will create a file you just need to upload to your own site then everything will be redirected to the new address.
For example "http://affilaitelink.com/fjkfjkdjfkjfkjkfjkjdfd" you could chose to name "mypage" then it will be saved as "mypage.htm" and uploaded to your website. The new link would then look like "http://yourwebsite.com/mypage.htm". You do need to obviously have your own website for this to work.