If you block someone you cannot see their posts and they cannot reply to threads you start. As a blocked person, I can read any and all posts but cannot reply to those people who have blocked me though one can hug and thank them.

If one is going to block someone else, it is not a punishment, they don't suffer not being able to respond to you, it is just sometimes annoying if they go to respond to a thread and find you have started it and they forgot you had blocked them. The blocked person can still see, read, whatever your posts, you just cannot read theirs and they cannot comment to you.