@Edent Not necessarily to either. A shared cache doesn't need to be centralized, it can just as well be federated (shared between co-operating servers, similar to relays, but replaceable by any admin) or a DHT - and content in a cache could be randomly refreshed from the canonical source. That said, the OGP tags themselves could contain malicious/misrepresented content at the source itself. Again, a federated, shared cache could police that by comparing OGP tags to page content.@neil @russss