A little-known Micro.blog feature is getting better visibility today: we store previous versions of private notes (and blog posts!) so you can restore them if you make an editing mistake or delete something. From @news:
Added note versions browsing to the web interface. When editing a note, you’ll now see a “5 versions” link in the corner. For Premium subscribers, we’re storing previous versions for a full year. (60 days for everyone else.)