Forget providing a means of expression for a diverse group of authors and creators. Pay no heed to tales of revenue model cocktails composed of micropayments and just a drip of RSS.
The real win here, the real payoff for incubating these nascent authors and “web sites” is conversations of this form:
Person: random string of words fish sock wibble
Person: oh, haha, you just haven’t read Lizardface Excruciator, you loser