If you are talking about the millions of websites that spring up through the automated activities of spammers and such like, then you have a point.
But then why would humans even want to consider such websites for a directory?
If you are suggesting that somehow humans can create websites 10 times faster than other humans can review them, I'd not with you. It akes *longer* to review a site that to create it? Is that what you are saying.
Afterall, I could argue that 1000s of hours of TV and radio programming is created every day.....Far too much for humans to absorb. Therefor we should invent machines to watch TV for us.