I've rounded up some of the many articles we have written on various aspects of checkout optimisation into one handy list..
For more detail, see our recent Checkout Optimization Guide, a must-read for all companies that accept payments online.
Mistakes to avoid
A look at the cross-selling usability nightmare of the GoDaddy checkout process.
Another example of checkout worst practice.
Some suggestions for Virgin Media on how it can improve its checkout process.
Are discount boxes costing online retailers in terms of lost sales, and how can they handle this?
Trust, information and payment security
A look at the kinds of information and reassurances that customers need during checkout.
How important is it to display third party security logos?
Design factors that help build customer trust.
Matthew Curry looks at the options for handling this issue without losing a sale.
Verified by Visa has been adopted by many online retailers in the UK, but does it cause customers to abandon sales?
Checkout / basket abandonment
Reminding customers about their abandoned baskets can be an effective way of tempting them back to the purchase.
Checkout error handling
Why strict postcode validation should be avoided.
Some general tips on error handling and messaging.
Includes the example of an e-commerce site that added $300m to its annual revenues simply by removing the register button.
A look at some of the options.
Plenty of retailers still insist on customer registration though, despite the potential for reducing abandonment rates.
Checkout expert Dr Mike Baxter talks about recent trends in e-commerce checkout design.
A round up of e-commerce related interviews from 2009, including plenty on checkout design.