Tip: use TextMate and Ecto
Quick tip for those who are using ecto and Textmate: you can edit your drafts using Textmate directly from ecto. In case you use Markdown to write your posts, this is great. The Markdown bundle in Textmate is very good.
Just choose Edit > Edit with > TextMate and you're done. The text updates in ecto after you save in Textmate.
For more information, see this article on the ecto blog.