This is a great new application which does one thing very beautifully: it previews a dropped markdown file, and updates when the file is saved. You can have the window open next to your editor window, and get a Markdown preview plus word/character/line count for free, with any editor.

This is funny, and fits well with my experience of Vim (though I'm an only an intermediate level user). It's true that Vim is a little bit addictive, and you keep finding yourself coming back to it.

Thoughtful discussion of the trials and tribulations of learning Emacs. I've found it very hard to get to grips with properly, or at least to the same level of proficiency as Vim.

Marks revisions by each author in real-time, like SubEthaEdit.

Ooo, I've got to give this a go: vi movement and editing commands in any Cocoa text window. Sweet.