Andrew - if the post contains a link to a domain that has not been whitelisted then the post will automatically go to moderation. Other than that, the rules do change a small bit based on time of day but your level of participation and involvement in the community should prevent you from encountering this. Feel free to email or message me directly with any examples or if this becomes a burden. We definitely try to keep the conversations flowing.
also moved to Community Canvas rather than regular old Forums. Community Canvas is where these sorts of "why is the community behaving this way" questions go.
Thanks for the info. I haven't been affected by this apart from when I raised the post, where a number of my contributions were being put to moderation. It was probably the same day or day after raising this post that last time something was put into moderation.
I appreciate the response.