This app is great for text-oriented content blog posting. It directly links to WordPress, Tumblr, Evernote, Blogger and Scriptogr.am. You can also export as HTML and PDF to the Cloud, iTunes or share through various means in another app, Twitter or Facebook email and Message as well as copy as HTML.
Byword also supports Markdown and allows you to preview it. Some more other important features include being able to post images to WordPress, sync through iCloud and TextExpander extensibility.
Non-English external keyboards now work perfectly with Byword (tested with Japanese layout keyboard and iOS8).
Byword is free but publishing cost 500 Yen (in-app purchase). Single purchase for all iOS devices.