Sex ed by text message. Of course it happened first in San Francisco, where they’re serious about getting sex education messages out, in any medium possible.

The moral of this story is: Want to talk to your teenager? Do it in the medium she or he uses most. For many teenagers that’s text message.

But maybe it’s not text message. Maybe it’s the cell phone, or Internet-based chat, or e-mail.

Or maybe the medium isn’t as important to your teenager as the primary content of the conversation. In that case, talk about whatever interests your teenager – movies, video games, books, horses, football, anime, whatever!

The point is that in order to reach and effectively interact with your teen on any subject, you have to do it on his or her turf. Trust me.