I probably wouldn't pay because there is a free backup tool (http://www.tumblr.com/goodies http://www.tumblr.com/goodies). Though for non-tech folk it could be

I probably wouldn't pay because there is a free backup tool (http://www.tumblr.com/goodies http://www.tumblr.com/goodies). Though for non-tech folk it could be cool to get automatically updates and restores if such a fatal error occurred.