Well, I've always liked the PayPal thing. Fast, easy online payment and quite secure (if you know what you're doing).
The PayPal Web Services comprise of 4 informational and transactional API's enabling developers to create e-commerce applications that integrate with the PayPal platform. The cool thing is that they seem to share a common API structure with eBay's Web services offerings. See http://developer.paypal.com
Ok, onto my coding machine, fire up VS.net and start coding the next demo...
Any customer outthere that has Internet access while I demo this thing ? 🙂