Estimating the Economic Impact of Mass Digitization Projects on Copyright Holders: Evidence from the Google Book Search Litigation -- [T]he revenues and profits of the publishers who believe themselves to be most aggrieved by GBS, as measured by their willingness to file suit against Google for copyright infringement, increased at a faster rate after the project began, as compared to before its commencement. The rate of growth by publishers most affected by GBS is greater than the growth of the overall U.S. economy or of retail sales.