The Library Journal, in partnership with Bowker Pubtrack Consumer, produces a quarterly publication called Patron Profiles (paywalled). Each report is based on surveys and data collected from 2000+ public library patrons across the US, and
“reveals key findings and important insights on emerging digital trends and new reading technologies shaping the future of libraries.”
The first issue (October 2011) is entitled ‘Library patrons and ebook usage’, and found that 50% of library users reported purchasing books by an author they were introduced to in the library. Other issues deal with mobile devices and mobile content, library websites and virtual services, and media consumption. The fifth issue (October 2012) deals with library patrons and the changing ebook landscape.