Thing 15

http://www.flickr.com/photos/thedepartment/137413905/

I like LibraryThing. I'm not sure what it's original purpose is, but I can think of a lot of uses. You can have a class account and hold discussions between your classes about books you are reading in class. You could do the same thing with student accounts. What I really love is the thing that suggests books to read. I have 3 authors who I love to read their books, after that...I'm lost.