For posting out of character stuff in the main thread, I'm going to play that by ear. I'm a pretty flexible gm.
I have downloaded a copy of all of the character sheets, so if its just a skill check, you can just list the skill in describing your actions (i.e. I'm moving silently and hiding to avoid being noticed by the sentries). You don't have to give me particular numbers. Likewise, you don't have to say moving full speed, half speed, double move, etc. In your text description, I'll figure that out based on whether you are running, walking, sneaking, etc.
If we get to a complex situation that has multiple numbers involved, we can use posts in this thread (the OOC thread). Likewise, I'm going to post level ups in this thread, game mechanics, and so forth.
When we start doing life and death combat situations, I'll post the numbers in this thread and the IC stuff in the other thread. i.e. If a Frost Giant criticals a PC, I'll write in this thread that character A was critical hitted for 87 points of damage and the Frost Giant cleaves into character B... In the IC thread, I'll write that the Huge Giant swung his axe so hard that it chopped off character A's head and the followthrough slammed into character B.