Admit it, you bought a Kindle, Wi-Fi, 6" E Ink Display
because you don't have time to carry a load of books around with you. And you carry it with you because you want to read ALL THE TIME.
But you don't always have the time to read a novella, or a few pages of a story, and the small spots during the day when you get a moment to read are spent mostly trying to work out where all the characters are, what they're doing and where the plot's at.
Enter flash-fiction. The shortest of short-stories for your lunch break, morning coffee, the commute to work, or even just those precious seconds where the boss' back is turned.