In a private meeting between eBay and law enforcement representatives, eBay announced that it would gladly hand over any information requested by law enforcement — and they didn't need a court order. Calling its privacy policy the most "flexible" on the Internet. Reporters were not allowed into the meeting, but a tape of the event was carried out and immediately handed to the press. eBay even went so far as to explain that, in order to make it convenience for law enforcement to get the information they "need," they can simply send an email or fax to get all the information available. The article is rather disconcerting if you read it in its entirety.
Oh, and one more thing…
eBay owns PayPal, so keep that in mind as well.