Kiko — an AJAX calendar — has released a new version #2 of their service. The new version has tabs, natural language appointment creation, RSS feeds, and more features like:

-Drag & Drop
-View Upcoming Calendar
-Featuristic Contact Management
-Appointment reminders can be sent to an email, AIM screen name, or mobile phone via SMS (US only)
-Share calendar publicly: calendar is publically viewable at kiko.com/calendar/username
-RSS feeds of your upcoming events
-Import appointments from iCal
-Import contacts from vCard

Overall the new interface looks neat. But I currently use Plaxo to sync my calendar with Outlook and see no reason to switch over to this service. Mymemorizer offers email and SMS reminders internationally. Maybe if they introduce an option to sync with Outlook and recieve SMS reminders internationally, I will use Kiko. Till then good luck to Kiko.

Kiko Homepage