Meh, i suppose i do spend at least 10 hours a day posting (sometimes as much as 15), but there's a huge difference between being here 10 hours a day, and posting non stop for 10 hours.
The only chance you'd have of making 1k legitimate posts in a single day was if you dedicated the entire day to it. Over 24 hours, you'd only need to post once every 86 seconds. Even then you couldn't do that without having a constant discussion (or multiple discussions) with at least one person, because the forums simply don't move fast enough to do that otherwise.