One thing that's always caught my attention but I never bothered to post about until now.
The time stamps in the forum view of the last post, they say "Yesterday" but from what I've seen this seems to be triggered by "Is it greater than 24 hours ago?". I think it would be better if it was "Is this before 00:00 local time".
Example, right now in General Games, it says:
That 8:14PM is Yesterday as well, and it doesn't show a date, just a time.
(It might be triggering on Server time, but so far everything I've noticed just seems to trigger on a 24 hour compare).