Related: Turn Microsoft Word into WriteRoom
Inspired by WriteRoom, John Watson has created an online version of WriteRoom that works solely inside the web browser - cross platform and requires no downloads or installation. Just write.
Press the F11 key to enter the full screen mode and start typing. Internet Typewriter will auto-save your work every few minutes. The font settings, colors and line-heights can be customized from the Preferences.
Update: You can also use Google Docs for distraction free writing.
There's a neat option to publish the text to your blog without leaving the Writer interface. Or you can save that as a text file to your hard drive. bighugelabs.com [Internet Typewriter]