I have this blog set up so that comments both appear on the blog and come to me as email. In recent days, a number of comments have come as email that have not appeared on the blog. I assume this is some sort of bug in blogger, and thought it worth mentioning so that people would know I'm not deliberately blocking them. Such comments include ones from James Klock, Bryan Eastin, Anonymous (on language instruction) and Albatross--and I may have missed some.
If your comment doesn't appear after an hour or so, you might want to try resubmitting it.