Your data remains on your SD card or devices internal memory. Compression technology is used to archive old data. A rolling post archive can be configured to keep your posts visible for a specified time period, and then archived or deleted, permanently. Copies can be shared with approved group members if so desired, but no data center is overflowing with millions of peoples data, to be sold to all who desire it for any cost. You are no longer the product. You are the producer.