If the topic were 'how do you feel about Goodreads or do you use Goodreads,' I'd have a different answer like others have...
As for the thread topic, my least was likely because it's a book from an author that is independent and doesn't have a great deal of readers yet.
LEAST POPULAR
House of Chaos: Paranormal Reverse Harem Romance (The Devil Rose Up From Georgia Book 2)
What a name, eh?