This may have been answered before, but I couldn't find the thread it it was. Bonhoeffer for Armchair Theologians says its available for Mac, Windows and Mobile. I can access it on my mobile devices, but it does not show a link to send it to Kindle. I assume there is a distinction between allowing mobile and Kindle access. If that's right, is there any way to know before purchasing whether a book is available to be sent to Kindle?