I would suggest that in this kind of post, where you are encouraging people to get to know how things happen around here, you might want to try to be aware of jargon-y things like using abbreviations & such, and put their meaning after their use in parentheses, or as a footnote, or something.

I'm pretty sure, after reflecting on it, that AU = Alternate Universe, because I think that makes more sense in this context than AU = the atomic symbol for gold. (And never mind that the atomic symbol still comes faster to the tip of my mind than other things AU could be short for.)