You know those free printed calendars we come across this time of the year? Now they're going online. Tylenol has one at tylenolcalendar.com, and it's strictly a marketing vehicle. Every week or so there's a coupon to print out. It only shows one month at a time. And of course there's no true sharing with any other calendar service or software, just some ways to spam the calendar to others via email, Facebook and the like.
I hope the next marketer to try this discovers iCal feeds!