Posterous (blog with email submission) now has time delay.

With scheduling of posts for particular times, it's easier to seem like a pro, so I like this feature. Implementing it as keywords in the subject is a bit unwieldy I suspect due to subject line length limits, but at least they offer it. In the comments I also read about the site lettermelater.com, which offers delay of email. (PG has a blog on posterous.)