There is a new book out called unChristian that sounds quite intriguing. (Mostly, because it backs up all of my beliefs on Christianity.)
Here is the central thesis of the book:
Kinnaman, president of the Barna Institute, was inspired to write this book when Lyons (of the Fermi Project) commissioned him to do extensive research on what young Americans think about Christianity. Lyons had a gut-level sense that something was desperately wrong, and three years of research paints exactly that picture.
The generations that include late teens to early 30-somethings) believe Christians are judgmental, antihomosexual, hypocritical, too political and sheltered. Rather than simply try to do a PR face-lift, Kinnaman looks at ways in which churches' activities actually may have been unchristian and encourages a return to a more biblical Christianity, a faith that not only focuses on holiness but also loves, accepts and works to understand the world around it.
I have not read the book, as I usually only read books when I am stuck in an airport with nothing to do. However, in my four years in DC, I have met quite a lot of young Christians who group up attending a fundamentalist church. And while many of them still identify with Christ, they do not identify with the church.
If you want to reach the Future Tithers of America, then you are going to need to make the church more about doing something than just avoiding sin. In my mind, in today's church, holiness is overrated, and compassion is underrated.