Below is a widget for my LibraryThing.  LibraryThing allows you to create an online library of books and tag the books with any tag you feel relevant to the book.  Students would be able to have an online account of the books they read.  They would be able to search the tags of others to find more books they enjoy.  As a class, students could all use the same tag for their books so others in the class could search that tag and see what others in the class are reading.  Students can also write reviews to let others know what they thought of the book.  LibrayThing puts readers in control of their books and how they wish to organize them.  Its free and easy to use.  Students and classes will find many reasons to include LibraryThing in their online world.