Find Current Warranty Status

I was recently talking to a friend about upgrading their warranty on their MacBook from one year to three years. Unfortunately, they didn't know when their one year warranty would end, so it was mostly a rough guess on which date they would need to purchase their AppleCare by. (As you will recall, you must activate your AppleCare within one year of owning your Mac.)

Later on, I read that you can find out your current warranty status by visiting Apple's Online Service Assistant. Just enter in your serial number and follow the directions.

To find your serial number, go to the Apple menu and select "About This Mac". From there, click on the grey text under the large "Mac OS X" until your serial number is displayed.