I finished nukumi.el today, which includes a major mode for
writing nukumi blog entries. It works very nicely now as it
- highlights header lines,
- displays leading and trailing space,
- generates new blog entries with partly filled fields
 (that is,Date,Encoding,Now-Playing.)
- and calls nukumi on C-c C-c.
See it in action:

NP: Die toten Hosen—The Passenger