Separation of structure/content and presentation is great for textual content splintered with a few images, so it shines in blogs, news sites (in theory) and ot

Separation of structure/content and presentation is great for textual content splintered with a few images, so it shines in blogs, news sites (in theory) and other types of informational sites (like documentation). I can give my blog a brand new look without touching any HTML markup, which is awesome. This separation does get in the way in certain modern web apps, where content is basically scrambled garbage without proper presentation.