I made a calendar from scratch to keep track of UO events on UOGuide. Head to any page on the site to see it. Major development headaches include:

• Working with Mediawiki in general
• 1/3 of the development time was spent dealing with time zone conversions
• Figuring out how to do the popup when hovering over a day on the calendar
• Thinking I was near completion until I remember 2 more things that I couldn’t launch without doing………………a couple times

I hope it becomes popular and useful for the UO community.