Nearly daily, an integrated library system vendor sends out announcements about library implementations or agreements. Marshall Breeding, as ever, helps you make sense of it all. If you're in any phase of evaluating your current systems or alternatives, check out his nifty chart Integrated Library System turnover in 2011 on the Library Technology Guides site. Drawing from data contributed by libraries registered in lib-web-cats, Marshall has presented an aggregate view. Turnover from previous years and 2012 to date is also available.