Eurydice - 5:54 pm on Dec 27, 2010 (gmt 0)

Groupon has two major problems:

- The idea is easy to replicate. There are at least 50 clones now, and more will come.
- The 50% fee can be cut. A competitor offers 40%; the next offers 30%; and soon, it's down to 10%.

Groupon should have accepted the offer.