I love the idea of a cheatsheet for Haskell, but I'd like to point out that the things covered by the cheatsheet are also the things I had the least trouble with starting out.

Things like the syntax of pattern-matching and datatypes I'd repeatedly Google for until I remembered, but relatively speaking it wasn't a huge time sink. The things that I did burn time on were things like getting types right inside monads, various other type-theory things, and cabal quirks.

I hope this cheatsheet helps people get started with Haskell, but my gut feeling is that the bigger hurdles will need another cheatsheet.