True but embarrassing story. I wondered away from my computer one glorious Sunday afternoon, and when I returned I absentmindedly typed

rm -rf ghost

I thought I was deleting an old download of ghost rather than... my whole blog.

I was extremely lucky to have the admin panel open so copied and pasted all of the text for most of the posts into notes on my computer. I will re-add them in time. First I added my ember intro tutorial as it's the most viewed post on this blog.