The site itself. You now drag and drop "blocks" into the area where you write your post.

Blocks are like, an image block or a text block or a header block, just a formalisation of what you'd do with html but ughhhh it means I have to reformat everything for the website.

Evernote made such an mistake :/ all note taking programs are about how easily the user understands their data, and so changing the layout in this way is clearly destructive. Ugh.