eBay has a new member-get-member promotion.
Existing members can refer new members. If a new member buys something for $10 or more or lists something for sale within 30 days, both the referring member and the new member receive 500 eBay Anything Points.
Those points, of course, can be used for eBay purchases (500 points = $5 credit) or converted to airline or hotel points at Points.com.
I can of course refer anyone who wishes to join eBay, just drop me an email. But most people have joined at one point or another I imagine?