Sometimes it’s the little details that make you smile. When a new WP site is in development, you obviously don’t want it to be visible to search engines. A simple setting in the installation process (and the admin) allows you to choose this, but it can be easy to forget once you’ve set it.
About a week ago a submission to the WordPress trunk enabled a new mini-alert in the admin header, which reads “Privacy on” when the blog is hidden from search engines. Small addition, but very helpful when going live with a new site! I hope this feature remains in the final 3.0 release (due in May according to the current project schedule).