email from MobilMe support
Here is the [disappointing] support email I received yesterday from Apple.
----------------
Hello,
The issue you reported was related to the ongoing transition to MobileMe
from .Mac. I sincerely apologize for any inconvenience caused by this
transition.
If you're still experiencing an issue related to your MobileMe
account, please check the MobileMe System Status which is available here:
http://www.apple.com/support/mobileme
Also, please see these articles for more information about MobileMe:
.Mac to MobileMe transition FAQ
http://support.apple.com/kb/HT1932
MobileMe Mail:
http://www.me.com/mail
MobileMe Contacts:
http://www.me.com/contacts
MobileMe Calendar:
http://www.me.com/calendar
MobileMe Gallery:
http://www.me.com/gallery
MobileMe Mail iDisk:
http://www.me.com/idisk
MobileMe Account:
http://www.me.com/account
We hope you enjoy MobileMe.
Sincerely,
MobileMe Support Team
--------------------
Which of course didn't answer my question. They made it sound like the shared calendar pushing was only unavailable during the switch. Well, the switch now seems complete, and I can't find shared calendar pushing.
From looking at other forums and threads, it seems that shared calendar pushing is impossible at this time--at least, without using third-party options.