It's Take a Friend to the Orchestra Month at Adaptistration, where short essays related to how we can all contribute to audience development have been appearing since May 2. The idea is simple - that the enthusiasm, love, and knowledge of concert-goers is one way to get new listeners in the doors.
The TAFTO FAQ has everything you need to know; there are also links to the essays, which are all interesting and worth reading. (Sam Bergman's is, in addition, hilarious; let me confess that YES, that was me dropping the full score of Naive and Sentimental Music between movements during its San Francisco Symphony premiere.)
I hope you'll read the essays, and even more, I hope you'll take a friend to the orchestra, this month or next, or even to a concert or the opera.