Rotor Q-rings -- What's the deal?

I have been riding Q-rings since 2007 on all my bikes (road, TT, mountain), and don't see myself ever changing back to round rings.

Here's a great article that sums up q-rings and gives a diagram of how the continuously changing gearing works as you pedal on a crank equipped with Q-rings.  The result is more uniform linear speed throughout the stroke, (hence a smoother pedal stroke) that better matches your biomechanics.

Enjoy.