Kevin (McGrath): I rent a post office box myself (in PA, USA), and that's where letters are addressed to reach me, including letters from the Pennsylvania Department of Motor Vehicles. However, I am still required by law to give the street address of my residence to the PA DMV. Both addresses appear on my PA drivers license.

I agree that, for someone leading a nomadic life, the choice of an address to use for legal documents must be a dilemma. But let me say again that in this case, Madelyne Toogood gave a business address, at a strip mall, to her probation officer after her September arrest when she was required to give her residential address at that time – an address to which the officer could go to see her if she were to fail to report to that officer as required (not just a place to receive mail).