Launch it like Google

PayPal had a big demo day where they invited the press to demonstrate their cool new technology: PDA-to-PDA money transfer. They made a big case of the fact that their investment was transferred using PayPal's technology.

Then, later, they found out that people found the web-based money transfers a lot more interesting than the PDA stuff. But they had their big launch day - before their product was even really completely conceived.