New today: you can edit your own posts now.
The interesting part isn't the edit button — it's that posts here are RSS, so an edit stays current everywhere it's travelled. Change a post and it carries an atom:updated marker on its stable permalink; every instance that already pulled it in notices on its next poll or push, updates its copy, and keeps its own revision history. No silent overwrite — and it doesn't jump your post to the top of the timeline.
We tested it live today: edited a post right here, then watched it propagate to two other instances, each independently recording the previous version. Posts that stay current, wherever they've been.