It was fun while it lasted...
Due to changes Wikio made to it's algorithm their ranking system was no longer a suitable method for measuring the blogs in the local e-sphere.
Reading List has searched for an effective alternative, but sadly none has come to light and we must therefore abandon this popular feature (we notice others have attempted to continue where we left off - albeit sporadically and less comprehensively, which makes it more open to question what value is provided by their efforts).
Never fear, BBR will continue looking for ways to fill this gap.