About LibraryThing advises your account can be made “private” so that no-one else can see what books you have but, if you remain signed in when you close the website, obviously they have the ability to keep tracking activity without your knowledge. Whether they do is not known.
When suggesting the use of these and other websites to get an idea of what to read next, it should be pointed out to patrons that they have a responsibility to peruse terms and conditions before agreeing to them and that recommendations are made on a collective basis by other users.
My personal choice is www.reader2reader.net. It is evident from the title that this is a site where readers can express their own personal opinions and they do … some quite succinctly! It does not make any pretence at being a ‘literary’ site but is simply a forum for telling others whether you loved or hated a book and why. Anyone may access and registration is not required to post a review or comment. There is a link to this site through The Reading Experience tab on our website. I have found some good books here.