All Calgoo calendaring products are now free. If you use free Calgoo, ads will start appearing in your calendars. For some people I'm sure that will be a weird moment. But until someone matches Calgoo's features, Calgoo will probably get away with it.
River just told me that Apple is offering the MobileMe service free to iPhone owners for 60 days. Given the rough start MobileMe has had, that's about the right price. Time will tell if Apple can extract $99 a year for MobileMe. To me it's still overpriced.