I’ve been seeing “Ok” pop up in a lot of places recently. Why is that? To me, OK is OK and okay is OK, but do we really need a third way to write it? I’m sort of OK with ok, because, as Allie Brosh says, maybe it’s been typed by an eagle with its talons. “Ok” shows you know where the shift key is and how to use it, but you can’t be assed to hold it down for the extra split second it would take to get the K in there. That just seems weird to me.
I don’t think it’s a recent phenomenon. I remember seeing it in a lot of computer software from the early 1980s. Some software I use on a daily basis still uses it.
FWIW, I agree with you that it looks weird and illogical. “OK” and “okay” are fine, and maybe “ok” is also tolerable if you’re writing informally in all-lowercase. But “Ok” is mildly grating. Maybe I’ll submit some patches to the offending software.