Because they don't take up any physical space. I can buy loads of them without my partner finding out lol. I can carry thousands of them around at the same time and access any one of them in seconds. They are easier to buy. They are customisable in terms on font and font size, line spacing, words on a line etc.
Last edited by shanghaichica; 10-06-2013 at 04:43 AM.
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