In the same manor what happens to wikis and wikipedia when a user wants to delete their data?
If the data was copied by another user does that data become their's to keep or does that need to be deleted too? Example: Jill sends Karen Jill's address via Facebook. Jill want's all of Jill's data deleted from Facebook. Does Jill's address she sent to Karen have to be deleted? Pictures? Pre-internet that data would be on a piece of paper in Karen's possession. Now it's less clear as it's really in Facebook's possession and Karen just has access to the data on Facebook's servers. As Karen I'd be upset if what I considered my data (my copy of Karen's address) to be deleted but is that clear in the GDPR?