How can we preach the good news to the dead? Anybody practicing it?
I don't think we can preach to the dead. In that passage, it was Christ who preached to the spirits in "prison" so that they might hear the Good News and the just could enter into the Kingdom of Heaven. He did this after His death on the cross won their freedom.
This topic has also been discussed
here and
here. You'll need to scroll down to see how the original topic got to the Bible passage you mentioned. See what you think.
Looking forward to your view.