There are two amazing articles in the Fall 2010 Small Groups.com Digi-zine I hope you'll check out. The first is by John Ortberg as he discusses what makes leading a Connection Group (small group) worth the time, effort, and aggravation. The second is a video interview with Mark Batterson from National Community Church about the importance of small groups in creating a powerful spiritual formaiton environment for the local church. You can see the whole issue here: Fall 2010
It's free and its amazing!