I have been a member here for almost 15 years and for the majority of that time have been a moderator as well for the site.
From my experience I can say that we do have a few periods where posts increase disproportionately to "normal" times.
Typically we have a couple of annual "silly seasons" like a few weeks either side of the Close Season, and then again as the nights draw in as people seems to spend more time online rather than irn the garden or down at their local pub'
Otherwise, even as an international site, we see the large proportion of posts made in UK daylight hours plus the occasional alcohol-filled very late night contributions.
Then, typically we will get the occasional previously banned member who manages to reappear under a new name and new ISP who is only here to cause trouble, but those are usually wheedled out pretty quickly.
Mostly, thankfully, we seem to have a steady stream of very interesting threads and post from some very experienced anglers and other newer contributors.
Long may it remain so . . . .