I tag each book that I need to read as "Queued". You could use "TBR".
When I am reading a book, I tag the book as "XReading" and I delete "Queued".
When I finished reading the book, I tag it as "XRead 2010". This way I can know that it is read and the year that I read it.
You can bulk tag items as well, so the work is very difficult.