Amazon's Kindle Owners' Lending Library now has more than 100,000 titles, growing to over 20 times its original size since launching in November 2011. While most traditional publishers are not part of the program Amazon reports that KDP Select authors have had more than 1 million loans and that KDP authors participating in the Lending Library have earned $1.8 million, which is an incremental 24% on top of their royalties from paid sales.