Zlio.com Online E-stores.

One of the first opportunities I learned about was Zlio, Zlio gives you an e-store and allows you to add products of your choosing to it. Any sales you make in your e-store earn you a commission based on a percentage of what their affiliate pays Zlio. With commissions ranging from a meager 1% up to 20% depending on the merchant you make a sale for.

The Good:

1. It's free, you cant beat free.
2. Fairly easy to understand and jump right in.
   
3. There's a lot of products to chose from, from many different retailers.
4. They are continually working to improve the Zlio shops and they offer little tips and help for your site.

The Bad:

1. Zlio's product search engine is absolutely horrible, finding the type of products you want to have in your store is a real chore as you'll be wading through lots of items you don't want.
2. As you're wading you'll probably notice Zlio seems to lag, more often than not.
   
3. Limited customization options.
   
4. Big ugly "ZlioShop Powered by Zlio" banner on all your pages. Which I feel makes the site look unprofessional.
   
5. For whatever reason once I signed up they've been sending me newsletters in French, really annoying.

Overall they are on the right track, but still have a long way to go. Like I said though it's free so give it a shot if you want. You can sign up here (referral link) or go to Zlio.com

To view an example visit the Online Business Shop