Internet auctioneer eBay saw first quarter profits surge 92% to $200.1m (€169.4m) compared to the first three months of 2003.
The booming profits came from higher sales as customers won during pre-Christmas promotions stayed loyal to the site with additional purchases.
Sales rose 59% to $756.2m (€640m), topping Wall Street forecasts and the company's own forecasts.
eBay said its PayPal electronic payment unit had also contributed to its success.
It also said it plans to expand its business in Asia, in particular China where it owns online auctioneer Eachnet.