George,
I was always taught that oil used for deep frying should not be used ideally more than once for deep frying. Like that article you posted the link to, the fear is the same that it is very unhealthy to do so. Once I deep fry with the oil, I save it and use it to cook my regular dishes. The fact it does not get to that intense heat and remain there a long time makes me believe I can use it up that way. To deep fry, I use fresh oil each time. I dont have any oil to dispose of either this way.
Payal