Unfortunately the easy (old) way is gone from what I can tell and have been told by support. It is made to sound so easy, however read on...taken from the MM Pages at
http://www.apple.com/mobileme/news/2010/10/new-mobileme-calendar-now-available-t o-all-members.html
*Publish a calendar for a group or team*
The new MobileMe Calendar lets you share a read-only public calendar, perfect for publishing an events calendar such as a soccer team schedule. After setting it up, you can send the team members a link to view the calendar on their iPhone, iPad, iPod touch, Mac, or PC.
*Please note these system requirements for the new MobileMe Calendar:*
*iPhone or iPod touch*: iOS 4.1
iPad: iOS 3.2; iOS 4.2 (coming in November) required for push calendar updates
Mac: Mac OS X Snow Leopard version 10.6.4
PC: MobileMe Control Panel 1.6.3, Outlook 2007 and 2010 (32-bit), and iTunes 10.
Used to very easily just add a link in iWeb to a "Published" calendar...
Also...talking to a caller earlier today, who used to be able to send links to people with Blackberry phones....also...no longer works.