That’s the number on the counter from this petition site. From the site:
On March 7, 2011, the publisher HarperCollins instituted an expiration policy on eBooks that are licensed to libraries. Under this new arrangement, eBooks would “self-destruct” after being checked out 26 times. This would require libraries to re-purchase the eBook if they wanted to continue to make it available.Libraries across the country are boycotting future purchases of HarperCollins eBooks, but our voices alone will not change their policy. We need your help.
Thanks to GalleyCat for bringing this to light.