The Worm follows a classic 6 levelled approach to rating the books he reads:
5 nods: A classic. Buy, beg, borrow & steal!
4 nods: Fascinating read
3 nods: Good, accomplished read
2 nods: Nice read, with question marks.
1 nod: Many pitfalls there be.
0 nods: Put the book into the recycle bin at once!
