One of my problems working in this format is that I get a world-seed in my head. Complicated, twisted, incomplete, but a whole lot more than 5 minutes' typing worth. Figuring out which part(s) to type up is, for me, a big part of the challenge - given 5 minutes and the seed of a world, can I create something resembling a story?
Thus far, it seems to have mostly worked out. Thank something! (no, not me)