eBay is running a promotion through September 15th, to reward you for referring a friend to sell on eBay!  You can earn $5 credit on your fees for each friend who qualifies.  Here are the details:
 
Hi everyone...I'm Zoulfia Moret from the Seller Marketing team. I'm here to let you know about a great new Refer a Friend program we're kicking off this week to help you share the fun of selling on eBay — and earn selling credits for yourself at the same time.

Here's how it works:
From today, August 15th through September 15th, we'll give you $5 for every friend you refer to sell on eBay (up to a total of 10 friends) via our Refer a Friend site. Note that your friend (or better still, friends) should never have sold on eBay before and should list an item during the dates mentioned. We'll credit your referral reward to your eBay Seller Account 6 weeks after the promotional period.

To qualify for the Refer a Friend program, you should be registered on eBay.com, be a registered seller yourself, and have a Feedback score of at least 10.

What's in it for your friends:
Besides discovering the exciting world of selling on eBay, your friends will also get the listing and Gallery fees for their first 3 listings credited to their Seller Accounts (6 weeks after the promotion ends). In order to qualify, your friends will have to list by clicking on the link in the email they’ll receive during the promotion period. (Cancelled listings do not qualify.)

We have terms and conditions for the Refer a Friend program. For instance – you can't refer yourself (duh!) or someone who has the same address or phone number as you. So please check out the fine print!

We hope you'll have fun helping your friends get started selling on eBay through the Refer a Friend program! Enjoy!

Sincerely,
Zoulfia Moret
Marketing