Hah, is it not opensource? If it really is closed then it's useless, not worth discussing. Then it's funny they maket it as being better than clouds, that clouds shuts down, change owners or policies. With closed source software they will be able to do the same. Yes, markdown is plain text but as more and more additional features would be used, one would get more vendor locked-in to this software. And then what - write an opensource alternative with all the features from scratch again. Clouds at least give online sync...