I agree with you Rudi, but to be honest saying that making a profit off a loophole or mistake will help the airline learn about their mistake is of course a bit of a hypocritical theory (sorry for a lack of better words), if one really wanted to help their airline then they would call them and get directly in touch with the IT department, not use the loophole as much as possible in the hope someone will notice.

The past job losses have also hit airline IT support departments and there is certainly a chance that due to a lack of staff they won't notice the mistake till an honest person calls them.

In the case of the PVR flights I understood someone DID call orbitz or MX and that person was subsequently called all kinds of names (also in chat) for doing so as he "spoilt" the deal for others. In this case it wasn't a "deal", it was a mistake, I am glad many people on FT managed to make use of it and am sure they will have a great time but it wouldn't surprise me if the IT person responsable for misloading the fare is now sitting home unemployed...

Just imagine for one second what YOU would do if it was you in this situation, if someone ordered something off you at a wrong price and you are going to make a substantial loss, say $10000... would you still deliver? even if the person never bought from you before and probably never will?