Yeah, I know I screwed up and posted in the Halo 3 section, stupid me. So does anybody have an idea when a good number of people check up on forgehub? I am guessing sometime around 4-10 pm.
Well your post stays up as long as its the most recent to get a reply. So the time woulldn't make a difference. If anything, posting at peak times may make your map less noticed as your map quickly gets replaced by other peoples. In short, it won't really make a difference when you post, though if you still want to know, I'd hazard a guess at weekends around noon USA time, avoiding weekdays. OR evenings on weekdays.
You're right to wonder because it certainly has an effect, I recently posted a map preview around 1pm Eastern time and that has had only a couple of replies so far. I'm guessing around 8ish, after people have had their dinners.