Still, Kronin, Fox, and Stephen, as non-claimants to other poems and known Mistborn readers, would be prime candidates for that poem, alternatively White Flame, ?, beet, FT, and myself pretty much can't be. I encourage anyone on that list of unknowns (Praz, Yuna, Hieshyn, and Amys) to poke through their own posts to see if they have any disclaimers lying about anyway to show they haven't read it and others to poke around for anyone who may have confessed familiarity or an intention to read it, there's a very 'early book 1' flavor about the poem, commenting about how skaa can be allomancers, so its entirely possibly someone was working their way through.