I find MacJournal to be most useful for creating journal entries on the go - not so much for publishing them. Personally, I dont care that styled text isnt supported, but its a bit mind-boggling that links are stripped out as well - I consider links to be part of the text, not an enhancement like font colors, italics, and the other extraneous fluff that usually comes to mind when I think about styled text.
While MacJournal is capable of publishing directly from the app, there dont seem to be any options for the posts status. The desktop version (with a bit of tinkering) allows blog posts to be sent as drafts, and I rely on that option because I prefer to publish my posts directly from WordPress. Lacking the option to post as a draft combined with the lack of support for links makes this app unsuitable for my uses in terms of publishing.
However, it works like a charm for journal entries that I dont intend to publish. For entries that I do post online, I just copy and paste. Its not ideal, but Ive got my fingers crossed that future versions will get closer to suiting my needs.