Groping about for an answer

... to the question of why train groping seems to be so widespread in Japan, or Tokyo at least, I checked my mailbox to find one of these squalid little adverts for, well, what exactly? I gather this is a service for men to go and chat with young girls. Who knows what else they do, but the fact that their central selling point is that you may get to look up schoolgirls' skirts might, just might, perpetuate the myth that it's OK to go-a-groping on the trains too. Creepy, creepy Japan. Ugh.