The struggle to bring about spelling reform in America had a surprise boost recently. The latest Microsoft spelling dictionary accepts “thru” as an alternative to “through.” The folks at the American Literacy Council take spelling reform very seriously, and this is there preferred spelling of that curious word. It seems like a pretty hopeless cause to me, but this episode did make me reflect on the fact that, in terms of practical motive force, the Microsoft spelling dictionary is probably the most powerful dictionary in the English-speaking world. Move Microsoft and move the world.
If spelling reform interests you, here is a good long list of some variations in traditional English spelling.