There is a recent rash of emails asking you to verify your credit card account that LOOKS VERY LEGITIMATE. However, when you look at the link it asks for things like your PIN number and SSN. There is no reason to give those sorts of things out. So...DO NOT USE ANY LINKS to update your account information. Allways log in direct to your account and do it that way if you think you need to.
Report these emails to eBay by forwarding them on with header displayed to firstname.lastname@example.org