So in terms of startups, what sort of business should pick Haskell to absolutely crush the competition, which is using things like Java or Ruby? What kinds of real world tasks can Haskell do, right now, so much better than other languages that it's a significant advantage?
Especially program transformations, compilation, correctness proofs, model checking... Other ML-style languages might be good too, but Haskell feels cleaner and more modern, and seems to have a more vibrant community these days.