Have you checked out “Engaged Readers?”

Glenn Peterson sent this along – very cool stuff: “Engaged Readers” keeps patrons engaged in reading by letting them interact with other readers and library staff as they create and share book lists, write reviews, add comments, follow fellow readers and more. Suitable for a summer reading program or year-around. Check it out at http://engagedpatrons.org/EngagedReaders.cfm. The service is free for small- and medium-sized libraries, affordably priced for the rest.