If you add people who aren't on Google+ yet to a group and post a message to your profile that they can see, Google+ offers to send them an email. Useful right? Not so much if you've lumped everyone together and you say something which your friends might find funny, but your parents/ in-laws not so much
But then I was like
I've spent the last 4 hours furiously revising clinical skills. And will be doing that tomorrow. And Sunday. So whatever. Ask me about finger clubbing and spider naevi and sub-acromial bursitis.
I dare you.