Number One Theme of This Year's ALA

Reading (storytelling/information gathering) is at it's heart a social activity.

If you want to get more people (kids/teens) reading, give them opportunities to share books with other people. Let them join (listen) to books group discussions/activities/etc. even if they haven't read the book. Chances are at least a few of them will find it interesting enough to read

Keep reading to your kids. Harry Potter was popular not just because the kids made it so (by word of mouth - ie socializing) but also because parents and kids read them together/simultaneously. At the very least, show an interest in the stories they are reading, not just the amount and level they are reading.