Below are links to articles on better group bicycling written by bicyclists from North Carolina and beyond.
Riding the Paceline by Carolina Tarwheels
Group Riding Tips by David Cole, North Carolina Bicycle Club
The Lost Art of the Group Ride by Peter Wilborn, Bike Law
Cycling Savvy a program by the American Bicycling Education Association
What is a Courteous Cyclist? by Steven Goodridge