The answer, it turns out, was quite simple: “We had an optional field on the site under ‘Name’, which was ‘Company’,” Megibow said.
“It confused some customers who filled out the ‘Company’ field with their bank name.”
After putting in their bank name, these customers then went on to enter the address of their bank, rather than their home address, in the address field.
Silicon.com - Expedia on how one extra date filed can cost $12m
