A question for the marketing people, who spend millions of dollars answering this question: How best to reach teens online with good information about their sexual health? Of course teens use social networking sites like Facebook and MySpace and others, but do they want to get information there? Would they "fan" or "friend" a site? For example, Sex Etc. has over 6,000 fans on its Facebook page. But as I scroll through them, a lot of them are older (indeed, I am one of them!). And when you consider that teens often average 100s of friends as an individual, you can see that Sex Etc.'s outreach is far from overwhelming.
It appears they do not use Twitter, so that is probably out. ISIS is trying to use cell phones/texts to deliver its messages about sexual health -- so are others.
As someone who is supposedly an expert at reaching youth, I find that I (and others) still struggle with the best ways to reach out.