Book lovers listen up, there's a new hashtag taking social media by storm and it's having a huge impact on the way books are sold.   BookTok is a TikTok community with more than 70 billion views.   People use hashtag booktok to share reviews and recommendations and connect with other books lovers, on TikTok.   It's almost like a giant online book club and one side effects is that books published years ago are getting talked about and shooting to the top of the current best sellers list.   Some of the books that go viral are out of print and hard to find - so if you've got one of them, you could make decent money selling it 2nd hand.     I've just picked up this warning from the United States about malicious QR codes being stuck to objects and buildings, that cause security issues when people scan them.   We all know the dangers of clicking links in emails from scammers but would you be so careful if you saw a QR code on the side of a parking meter? Or on a shop window?   Be vigilant at all times, if you've any doubt, don't scan the QR but try to check to see if it's legitimate.

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