Unfortunately Amazon's MobiPocket format (*.mobi, *.azw) hog-ties a lot of the CSS which is used to control formatting. Couple that with the fact that a lot of publishers really don't understand ebook formatting concepts, and you get some horrible looking poetry formatting. Can poetry be formatted correctly in MobiPocket? Yes. Should you expect it to be? Probably not, at least until publishers become more critical of how their books look on ebook readers. At current most publishers treat ebooks as an afterthought. And most publishers are still living in their limited typesetting world. Until 2 or 3 years ago most publishers rarely even saved the electronic files used to create their printed books!