When MobileMe came out, I was hopeful that it would solve all of my calendaring and contact issues...disappointingly it didn't solve anything and was worse than what I was already doing.  I had really hoped that it would be better than the current choices for on-line calendaring and would become my primary on-line calendar.  But, it doesn't even do the basics, let alone publishing, subscribing, merging of iCal data, etc.

Here's why I canceled it:

So, it's back to a mix of Google, Airset, iCal, iTunes & iPhone, and BusySync:

At least I learned about Google contact syncing in Address Book while trying out MobileMe, I'll probably keep that turned on...of course something in this process duplicated all of my contacts, so I still have to fix that... sigh!