Turn off iCal shared calendar messages in Notification Center
I share a lot of calendars with friends and family members using Apple's iCloud service. Every time someone adds an event to a shared calendar, I am bombarded with alerts across multiple iOS and OS X devices. It can get annoying. I don't so much mind the alerts on my iOS device, but I do mind them on OS X. Then recently, I stumbled upon the seemingly hidden preference to turn off shared calendar alerts in iCal. Here's where you can find it:
Launch iCal and open the preferences pane. Select the Alerts tab along the top. … Read more