At the risk of hijacking the thread...
Another technology that never went away but has been relegated to occasional use is the down tube road shifter. We have all seen Lance, Marco, and many other Tour de France riders equipping their bikes with a front down tube shifter for climbing stages. Why? For front shifting nothing beats either a down tube or thumb shifter. Friction is the way to go for precise adjustment and no chain rub. It is also the way to go if you want to lighten up your already light road bike, a must for gaining an edge on the competition.