I agree with you. I have taken WG $ out (logging them, of course) and put them back into circulation. I have also just moved a few. I wondered the same thing as you, however, since it seems to combine the "Where's George" program and the "Travel Bug" program. If they are put into a cache, with a note telling to put them back into circulation, I think it would be better..not useing them as TBs.
DiziTxs