If you want run all your affiliate programs efficiently and effortlessly with all the built in security and keyword monetization, then I would highly recommend that you take a closer look at Ninja Affiliate.
Here are just some of the many uses that can transform your blog into an efficient cash hungry beast.
Easy Affiliate Link Management – You can easily give each affiliate link an easy-to-remember name..
Flexible Link Management – Accepts every affiliate link format out there, so you don’t have to waste time with various affiliate marketing tools.
Create Professional Redirect Links – Use professional looking redirect links that let your prospects know you’re a pro marketer.
Manage Links by Groups – Too many affiliate links? Ninja Affiliate allows you to easily create different groups to manage your links.
Prevent “Affiliate Theft” – Cloak your affiliate links to prevent link theft and affiliate sabotage. No one will ever steal your hard-earned commissions again.
Insert Affiliate Links Directly – Add your affiliate links directly for your WordPress blog editor – you’ll never have to hunt for links again.
Transform Keywords to Links – Automatically turn keywords in your blog to affiliate links. You can set a limit too, so your posts don’t look like a spam blog!
Advanced Display Options – Ninja Affiliate allows you to display any text you want in your web browser’s status bar.
Use “No-Follow” Links – Control your link juice and escape punishment from Big Daddy Google with ninja precision. In fact, you can control your links any way you want to.
For anybody who is serious about affiliate marketing with WordPress this is a must have application that will 
seamlessly slot in with your other plugins and which you can control from your dashboard editor. I have only touched on a very small part of what this plugin can do, so to find out more for yourself jump on through, he explains it in a lot more detail.
