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Before you do — what permanent means here

• Your answers are public and they do not expire. Each gets a fixed address on the open web, under your name unless you choose otherwise, and search engines are invited to index it.
• Rewriting adds a version rather than replacing one. Change your mind in five years and the new answer leads; the one it replaced stays readable underneath. You cannot edit or delete an earlier version.
• Deleting your account does not fully undo it. After 30 days we remove your name, handle and email, and each answer becomes a tombstone — the count it contributed to survives, your authorship of it does not. Anything already quoted or archived elsewhere is beyond our reach.

Set out in full in the terms and the privacy notice. You must be at least 13.