Isaac Asimov edited a wonderful collection of short short stories which he introduced by explaining that novels had a point (or perhaps several) with a lot of stuff around them, short stories had a point with a little stuff around them, and short short stories had just the point.
Here are a few of my favorite point sources on the Internet:
One Sentence – True stories in one sentence
Post Secret – Honest (sometimes life-saving) postcards of secrets
Indexed – Thinking relationally without math