I tend to disagree. Firstly, nobody cares about my blog, so it's more a public personal journal than anything else (a web log, in other words). I do “publish into the void” and I'm not delusional enough to think otherwise, I'm okay with that. Secondly, yes emails are private; but if i have an interesting discussion by mail about a blog post, I can write a second article resuming our exchange in a more easily readable way than the naked messages. Thirdly, and maybe more importantly, if someone want to make their opinion about something I wrote public, they can do it in their own place. For me the blog ideal is not a succession of isolated islands, but a interconnected net. The discussion should occur not within the blogs, but between the blogs.