Depending on what you mean by 'format', you might be able to direct those people to the specific articles you think they'd benefit from, or even pick out particular snippets to talk to them about (in a 'hey, isn't this a neat thing' sense, not a 'you should learn this' sense).
"Pick out particular snippets" seems to work quite well. If something in the topic of conversation tags, in my mind, to something I read on LessWrong, I usually bring it up and add it to the conversation, and my friends usually find it neat. But except with a few select people (and I know exactly who they are) posting an article on their facebook wall and writing "this is really cool!" doesn't lead to the article actually being read. Or at least they don't tell me about reading it.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
If continuing the discussion becomes impractical, that means you win at open threads; a celebratory top-level post on the topic is traditional.