So I learnt something new today about Google+.
You know how it's really easy to get lots of your friends to add you to their circles without you asking but its so hard to add them to your contacts if you haven't mailed them before (because it involves so much personal effort).
Well, if most of these people are probably already in your circle (and lets say you're in theirs), they are already kinda in your contacts. If they have a valid email address on their about page, you could simply convert an entire circle to a google group and relay official information to them by mail. SWEET!!