I do on occasion. Sometime I read things that hurt to read and I do NOT post a reply. On the other hand sometime I see that a family member is suffering and I will have something to share that I feel is beneficial, so yes, then I will post, as long as it is constructive.
I've also found that F&F folks can also be supportive on our side as well. So it's nice that in some ways we can still support each other from our different sides of the fence.