The tradition of Sabanto-Meido arose in Nippon/Japan after the widescale adoption of robotics and automation. It is a cultural movement to embrace traditional values and to counter the subculture movement of the Ko girls.
In some virtual forums going AFK is the equivalent of passing out drunk on the couch at a fraternity party. Everyone from hackers to everyday participants will take shots at you, and you can expect your avatar to look very different when you get back. Hopefully you will notice quickly.