Groupon says 40 million people subscribe to its daily - coupon e - mails . Here 's a snapshot of the company 's growth : ` ` people would probably have tried to join Groupon , '' writes Dan Frommer . Groupon is primarily a research and writing agency , built on people - watching and smiles .
Groupon says 40 million people subscribe to its daily - coupon e - mails . ` ` people would probably have tried to join Groupon , '' writes Dan Frommer . Groupon is primarily a research and writing agency , built on people - watching and smiles .