I was checking this subject for my surveys and found the most stupid ways to claim awards.

I have made one return flight with AOM from Orly to Sydney (back in 1999/2000)

I have claimed this Business Class trip under 5 different Qualiflyer numbers and they al got approved. (This was the same with Sabena and Swissair.)

In that time you could fly for 60.000 miles with AOM to Noumea. So with one flight I (normally 30.000 miles) I got 150.000 points in total, so two free tickets and a bit more for one flight, not bad I would say.

That Qualiflyer program didn't work at all.
Also I travel a lot on staff tickets and even those tickets where awarded.

The miles and More program works perfect and don't put the miles on your card.

One World also made a few mistakes especially with Qantas, got double, double points.

What also works is opening different FF programs, let say:

Qualiflyer and AA. Claim on both programs, but this only works if you send the copy of the Boarding passes later. Don't let them put it on your card automatically.
Just say at the desk I am not an ff member.

So I hope you have some nice tips