I'm not opposed to flash fiction on principle, I just think it's near-on impossible to actually work meaningfully in the form. The domain of the continuum between prose poem and joke that flash fiction falls on is fuzzy to me, and if one extends flash fiction out far enough that it becomes distinctive, then it also loses its shape. I suppose good flash fiction is inevitably a scene of a story that never starts or ends, but most of the time, this manifests in machine-gun napkin doodling that doesn't have the level of intent such a thing would need to impact me. When Williams did hit me, and it happened in spurts, it felt like a haystack hand-condensed into a needle. See one of my favourites (aka Hedgehog):

I assume the forum you're talking about is WLF?
It sure is! I don't post on there, but I really enjoy lurking in the Nobel Speculation thread. Get a lot of good recs out of it, and got to feel very smart last year when I told my friends who don't care that I was like 65% sure Laszlo would win, and then he did.