I've been told in the past that I can not say the reason for this in game threads because it is not 'verifyable'. Lets just say it's much easier to communicate in "real time" instead of once every 60 seconds in a post, and much easier to read someone when they can "mis-speak" and not edit.
I've never understood why anyone has a problem with the two of you tending to work together. If you know each other personally, it stands to reason that you'd trust each other a bit more.