Rachel Brown, owner of the small Need a Cake bakery, became a victim of the old adage, "Be careful what you wish for. You might just get it." More than 8,500 people took Rachel up on her Groupon offer of a 75% discount on a dozen cupcakes, forcing her to make over 100,000 cupcakes to fill all the orders. In the end Brown lost almost $20k. "We take pride in making cakes of exceptional quality but I had to bring in agency staff on top of my usual staff, who had nowhere near the same skills. I was very worried about standards dropping and hated the thought of letting anybody down. My poor staff were having to slog away at all hours — one of them even came in at 3 a.m. because she couldn't sleep for worry," she told The Telegraph. "We are still working to make up the lost money and will not be doing this again."