#Wikidata uses talk pages. The #Wikimedia Foundation is working on a tool called "Flow". As is usual, there are those people who want to keep everything the same. They love their system.
It is fine and dandy. When I added a comment on the Wikidata "Chat" I could not click on the appropriate edit button and get the right section. As it is ,Talk is flaky as well and it is not as easy and obvious as it is made out to be.