Has anyone else noticed this?

In the weeks following 9/11 I was "randomly" picked for about 5 flights in a row... sometimes the checked baggage and then ANOTHER carry-on inspection at the gate... they also did the "swab test" where they rub a piece of felt all over your bags and then run it thru the analyzer...

since then, not a thing... I flew ~16k miles in Dec and was never selected... with one exception I am bascially flying on one carrier...

so, what do the gate agents do with those little printouts when they are done? do they throw them in the garbage? or did I "prove myself" and now I have some kind of "he's OK" tag in my profile???