Yes, I just checked. Amazon.com auctions will not show the e-mail addresses or names of bidders till the reserve is met. Their page says:
"Bidders' names hidden until reserve met."

eBay looks better, eh?

This is the full Amazon page:
http://auctions.amazon.com/exec/varzea/ts/auction-bid-history/Y03X2881503X3909423/002-2125801-5448206
(As of this posting, the reserve was not met; it might change in time.)