When it comes to the popularity of books, we're all aware of the best-seller lists that tell us how many copies have been sold.
But in this digital age many of us consume novels digitally on an e-reader or by listening on audiobook.
Amazon is the market leader when it comes to such matters - with its hugely-popular Kindle and Audible platforms.
So we thought it would be interesting to look at which books were most read in 2023, taking account of these new ways to enjoy storytelling.
These are the top 10 - and they're pretty different from the traditional best-sellers of the year, which you can see here.
5. Harry Potter and the Half-Blood Prince by J.K. Rowling
The penultimate Harry Potter novel makes it a top fve clean sweep for Edinburgh-based J.K. Rowling. "When Dumbledore arrives at Privet Drive one summer night to collect Harry Potter, his wand hand is blackened and shrivelled, but he does not reveal why. Secrets and suspicion are spreading through the wizarding world, and Hogwarts itself is not safe. Harry is convinced that Malfoy bears the Dark Mark: there is a Death Eater amongst them. Harry will need powerful magic and true friends as he explores Voldemort's darkest secrets, and Dumbledore prepares him to face his destiny..." | Contributed
6. Spare by Prince Harry, The Duke of Sussex
Another Harry is the first non-wizard to appear in the chart. The book that everybody was talking about in 2023 topped the best-seller charts and was the most-sold book of the year on Amazon - only being relegated to number six in this list due to Kindle reads and audiobook listens. "For the first time, Prince Harry tells his own story, chronicling his journey with raw, unflinching honesty. A landmark publication, Spare is full of insight, revelation, self-examination, and hard-won wisdom about the eternal power of love over grief." | Contributed
7. Harry Potter and the Prisoner of Azkaban by J.K. Rowling
After the briefest of interruptions, it's back to that boy wizard and the third in the Harry Potter series. "When the Knight Bus crashes through the darkness and screeches to a halt in front of him, it's the start of another far from ordinary year at Hogwarts for Harry Potter. Sirius Black, escaped mass-murderer and follower of Lord Voldemort, is on the run - and they say he is coming after Harry. In his first ever Divination class, Professor Trelawney sees an omen of death in Harry's tea leaves.... But perhaps most terrifying of all are the Dementors patrolling the school grounds, with their soul-sucking kiss..." | Contributed
8. Harry Potter and the Chamber of Secrets by J.K. Rowling
The least popular Harry Potter book in the seven-strong series is still the eighth most-read of the year according to Amazon. "Harry Potter's summer has included the worst birthday ever, doomy warnings from a house-elf called Dobby, and rescue from the Dursleys by his friend Ron Weasley in a magical flying car! Back at Hogwarts School of Witchcraft and Wizardry for his second year, Harry hears strange whispers echo through empty corridors - and then the attacks start. Students are found as though turned to stone... Dobby's sinister predictions seem to be coming true." | Contributed