[carlosrt]

Calling, works, and is far more effective than clicking a button, says Alexis Ohanian, in this fireside chat at the NationBuilder HQ.

Uploaded a couple of days ago: http://youtu.be/ybXKBJ0xDNU?t=10m35s

[w1ntermute]

No doubt, because the barrier to entry is much higher. Someone who bothers calling has to be really interested in the issue. Focusing on phone calls is effectively a high pass filter for importance to the constituency.