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Are you sometimes put off reading books filled with explicit or offensive words. Well, as always the answer is - there's an app for that. In this case, it's called Clean Reader and it gives readers the power to hide swear words in ebooks. Jenni Fagan is a Scottish writer and is best known for her novel The Panopticon - which contains a lot of swearing. (Photo: Warning swearing sign. Credit: Thinkstock)