Groupon says 40 million people subscribe to its daily-coupon e-mails . The company has been criticized for offering a free trial of the service and then charging customers after they sign up. Groupon is primarily a sales and writing organization , built on people-power and smiles .
Groupon says 40 million people subscribe to its daily-coupon e-mails . `` Google would probably have tried to change Groupon , '' writes Dan Frommer . Groupon is primarily a sales and writing organization , built on people-power and smiles .