What a great little plugin. I like to call it word linking as you can set up some affiliate ads for virtually anything using the HTML part and then any time you mention that word in a post it is linked forever.
You don't ever have to worry about making your website name a link every time you type it and basically any keyword can be a link, every time I mention banner advertising they're linked to a banner network.
Perfect time saver and money making plugin once you've set your ads up.