My post in Inc a week ago: While sitting at a restaurant in London Heathrow airport yesterday, I found myself between the unfortunate cross hairs of a helpless server and his useless manager. At noon, while the restaurant was full of customers from around the globe, the credit card machine stopped working. Many patrons, myself included, did not have enough British pounds to pay for our meals as we were on our way out of the country. The waiter explained that I would need to pay my tab in cash. [...]