I remember a topic about this on the forum, but I have only got 4 minutes now. If I find it I will edit the link in.
Personally I wouldn’t do it deliberately, but I have had two dreams of meeting someone who has died in my dreams. 
https://community.ld4all.com/t/visits-from-the-dead/7597
All the interesting posts from 2 Sept to 15 Sept have gone!