Is this the beginning of the end for Groupon and their peers? Certainly not, but they really need to find ways to harness the potential they have in their vast database of subscribers, if they are to stem the rot and remain successful.
You do not hear much about the people in advertising; the ad agencies? Yes, maybe - but hardly anything about the people.
In the European Cup this week, the England v Italy quarter final and the Spain v Portugal semi-final have been decided by penalty kicks in which a player is asked to put the ball on a spot and kick it past a goalkeeper into a goal (or not).