Here is a great post at the YSMARKO blog on the obsession with numbers in youth ministry. Read the comments as well -- Marko's post has raised quite a debate. I've never been one to focus much on numbers. As the old saying goes, its more about quality than quantity. But there are arguments to be made for tracking the numbers in your group, and for making it possible for your group to expand to welcome in more youth in need of a spiritual home.