Jackie Kay has a wonderful essay/thought-piece on the short story over at Thresholds. A snippet:
'I am writing short stories again and they make me happier to write than anything. There is a great swirling freedom in the short story. You have to hold your breath as you write one. You never know if you are going to pull it off. Writing one story does not help you to write another. Each time, the form demands you find something new, something you have not found before.'