We should look also at how to integrate a calendar with a personal blog. One of the things I have been thinking about is how to integrate the notes that i make in my book and the blog. Both have ideas embedded in them, but the book is not searchable while the blog is. The book becomes a silo. So, I could think of extending the blog to include both appointments and other events, and daily personal notes, which can serve as links to the details in my book.