Now, we have many members among us who know down to the fraction of a mile how many FF miles we should receive for a leg, a flight, a bonus, or a partner. Being mileage addicts, we seek out these things and harangue our respective FF programs mercilessly if miles fail to post.

So, if the airline makes a mistake in your favor, are you obliged to report it? Things like giving you first class mileage when you flew on an upgrade, or giving you miles on an award ticket or not deducting miles for upgrades.

Do we, as FF'ers, have a moral or legal obligation to report these things to the airlines?

Looking forward to the responses....