If one of your online friends of acquaintances goes missing, how long do you wait before you start to worry? For me it depends a lot on the person's track record for being online. If it's somebody who has literally been online every day for months (if not years) then I'll start to worry sooner. Maybe even after a week if they didn't mention anything about being gone. If it's somebody who is off and on then I'll wait a few weeks to a month. There are some people I talk to online who show up a few times a month if that. There's really not much I can worry about when somebody is hardly online anyway. Even if something did happen to them I'd probably just forget about them. There are people I talk to maybe once every 8-10 months. If somebody like that dropped off the earth I probably wouldn't notice. I might wonder what happened but I wouldn't worry. So what about you? How long until you start worrying about somebody when they go missing online?