From SmallGroups.com:

1. Focus on Building Deep Friendships
2. Be the Kind of Christian Unchurched People Have Never Met Before
3. Cross-Pollinate Your Unchurched Friends with Your Fellow Group Members
4. Avoid Duplicity
5. Give and Take Refrigerator Rights with Unchurched Friends
6. Pray for Yourself
7. Refuse to Engage in Gossip
8. Share a Relevant Message
9. Invite, Invite, Invite!