WordPress upgrade reminders - by email!
There are lots of reasons why people don't keep WordPress up to date. Most excuses revolve around time and busy-ness and forgetting: a few bloggers have the more legitimate cause that they know crucial plugins will break with newer versions than what they're using. And one dear chum gave as her reason for still being on 2.7 the other day, "well, Sue, we're not all as obsessed by our blogs as you are". Grudgingly 
I admit she may have a point.
Which is why I loved the idea of a plugin which Donncha reviewed earlier today. Upgrade Notification by Email checks with WordPress.org once a day, and emails you if the version you're using isn't the latest one. It's perfect for people who don't check their Dashboard often, or who have several dozen WP installs to look after.
