Hello all, I’d like to bring up a new aspect into the GDPR debate: From what I’ve heard, the rules about personal data are less strict when the data is stored and processed in order to fulfil a contract. For example, in this case, deletion requests would be void. Now many wikis demand in their TOS that all contributions are licensed under a specific license (e.g. CC-BY-SA), and that license is indeed a contract.
Greetings, Thomas