This rating is for engrossing books whose Attention Deficit Disorder style of writing can make a sixteen hour trip pass as easily as a summer's day. These novels threaten to leave you behind if you put them down even for a moment.

This rating is for books in which you shall lose yourself in thought and complexity of characters. It is best to be somewhere comfortable where you can spend long periods of time with these novels.

This rating is for books of an adult nature which are best read with a single hand.

This rating is for books written in short digestable bursts of insight, with chapters rarely longer than two pages. You may feel free to leave these novels at any time with the reassurance that they have more delightful nuggets for you when you return.

This rating is for books with no purpose outside of academia. May the Gods help you get through these if you are not a ravenous geek for the book's particular field of interest.

This rating is for humorous books which consist of a collection of snippets with a single connecting theme. These are best given as holiday presents to people whom you have no idea what to give.