I get tired of telling this to people. But, once again: Repeat after me: "BLOGGING IS A MEDIUM NOT A GENRE" [via boingboing]
That's true, but not all media are created equal. Blogging is a medium which places a premium on linkages as well as message, as opposed to other written forms which are largely limited to message, and visual forms which are mostly devoid of textual content (I'm exaggerating, but you know what I mean).