I enjoy writing Flash Fiction. I use the phrase to mean very short pieces of writing, perhaps less than 100 words. It's an exercise in conciseness, of finding the right words and making each one count.
I have a short story today on www.paragraphplanet.com. My stay on the 'Planet', like my 75 word story, is brief. If you are reading this post on any day apart from Tuesday 17 February 2015 my story will no longer be there.
Why not try it for yourself? 75 words is all it takes.