Um...well, no, that's not it, not for me anyway.

I've been on late at night, I've seen Mansview on here sometimes, and, yeah, around 1:30 a.m. central time (for me) it dies down to nothing until around 5 a.m.
I tend to check for new posts throughout the night, if I'm awake. I think a few of my posts have been made late at night.