Amazon's Write On site is closing on March 22. They posted this announcement last week:

While we have been proud over the last few years to have brought together such a vibrant, active, and creative community, unfortunately we will be closing Write Onís doors on March 22. After this date, access to Write On will be unavailable.

Your account will not be affected by the closure of Write On. If you donít have any content you wish to save, no further action is required on your part.