http://www.itdp.org/documents/ITDP_Bike_Share_Planning_Guide.pdf

^ A new, very comprehensive guide to bike sharing, intended for cities contemplating building a system, free for the downloading, from the Institute for Transportation & Development Policy.

Plus, an accompanying new video from Clarence Eckerson, Jr. at Streetsfilms:

Riding the Bike Share Boom from Streetfilms on Vimeo.