Stories of exactly 100 words are known as ‘drabbles’: http://en.wikipedia.org/wiki/Drabble
Dr Ashley Chantler recently had his drabble ‘A Day in the Life of Steve’ published by 100 Word Story. You can read it at: http://www.100wordstory.org/3195/a-day-in-the-life-of-steve/
Ashley teaches drabbles on his BA Creative Writing module ‘Flash Fiction’. For information about the BA, click the link on the right.