I run a service based business (computer repair) and that's exactly what I was thinking - I can offer a 50% discount and it's still almost all profit. But I won

I run a service based business (computer repair) and that's exactly what I was thinking - I can offer a 50% discount and it's still almost all profit. But I wonder if this is us only or works in other countries (must check), and how many people in my town of 8000 have ever heard of groupon.