The mods could suggest from which location people post – depending on the IP address.
I usually post on-the-go. Even my long posts are generally composed on-the-go. Some, I prepare as a draft in my inbox (which can take hours and sometimes days with a paragraph or even a sentence at a time) and then copy & paste to the Coffee Room. I try not to draft anything during work (although I can finish something up – edit- and post).