This has been continuous development over a long period of time. Now the Knowledge Frame features are available for you. Knowledge Frame is what I have enjoyed using when in my middle school and it is very effective for learning.
With current implementation of Knowledge Frame, you can put existing notes into a frame, or you can write snippets directly inside a frame. Knowledge Frame can be displayed like a tree and you can reorder the sequences of notes inside the frame. You can also see related frames. You can also view the simple text or print version of the frame and copy it to your blog writing editor and continue writing on it and publish it as a blog post.
There are some other features. Be sure to check this out!