Do sites like rentmasseur and masseurfinder allow a masseur to have an ad with no photo, or maybe just a workspace photo? If yes, then that's another option for a masseur who wishes to remain discreet. He's unlikely to get many contacts, but that's a him-problem, not a me-problem. Either way, there's no excuse whatsoever for using someone else's photos and not clearly disclosing that fact in the ad.