Here’s my going line on comments v. e-mail:
If you post a comment, I’m going to feel free to comment on it publicly, since, after all, it’s a public comment. I’ll either respond in the thread or if it’s especially interesting to me, make an entry out of it.
If you send me an e-mail about something I’ve written, I’m going to assume it’s private communication and will respond in e-mail only unless you’ve specifically noted it’s available for public comment and/or I’ve asked you to allow me to mention it and you’ve agreed.
So: Comments — public. E-mail — private. Either way, it’ll divert me from work. Mmmm… short attention sp– look! A pony!