iOS-style Notes, Reminders, and banner notifications are now live... IN SPACE! Well, sort of. The web app versions are now out of beta and available to one and all via iCloud.com. Even though Notes, Reminders, and Notification Center are all available already on iPhone, iPod touch, iPad, and Mac, it's nice to have iCloud.com as a backup option.
If, for some reason, you run out of power on your mobile device, or you're using someone else's computer, you can quickly log in, look up something in your notes, check your reminders, and if something important comes up, get alerted to it right in the browser.
The Notes, Reminders, and notification banner design and interfaces looks exactly like the iPad, You can create, read, write, and delete Notes and Reminders, and individually enable or disable notifications for Mail, Calendars, Reminders, and Find my iPhone.
All that said, I don't think I've used iCloud.com in a year or more. How about you?