I received notice from eBay that it needed additional information for me to retain my seller account. Based upon this thread, I was expected to learn that eBay wanted my full social security number and that the number would be used for, among other things, IRS reporting purposes. If that was the case, I planned to drop my eBay account. But, that wasn't the case. I was asked to provide the last 4 digits of my SSN...which isn't sufficient for eBay to report anything to the IRS.