The date on this post is July 15th, and the email says they're shutting down on the 19th. Giving customers 4 days notice is less than ideal.
And a weekend at that.
Well, may be there are simply no customers to begin with...
Because they announced a 1mo (er, 4 day actually! I forgot it was July) period until the service shuts down and all data is deleted, as per the blog post which is the link in this article.