Marc Andreesen Throws in the Towel on Weblog Comments
blog.pmarca.com: Comments, trackbacks, and design: I have removed all comments. I just don't have time to provide the level of moderation needed to ensure a respectful and relevant conversation.
The great thing about blogging is that everyone can have a blog. I love when people contribute thoughts on the topics I write about, and I'd highly encourage anyone who wants to do so to have your own blog and then provide trackback pings to this blog. I'll keep trackbacks open on my last 20 posts to facilitate that method of conversation. (I'll close trackbacks on posts other than the last 20 in order to limit the window for spam)...
The failure of the internet to develop effective moderation systems is a great pity. But I don't have the answer.