Hi, James.
I rarely use FB at all ,and don't find it to be a useful tool in sobriety because there's a lot of activity going on there that actually involves booze.
Besides, if people don't understand you problem chances are hight they won't support you.
Posting and blogging here keeps me accountable and give a chance to share my thoughts with people who know exactly what I am talking about and can give feedback and relate.
Best wishes to you.
Keep posting.