OK vs. Okay
There are four common ways I've seen to spell the term referenced in the title of this post - O.K., OK, ok, or okay. Apparently, three of those are accepted spellings, - O.K., OK, and okay, are all okay, but ok isn't.
There are a whole host of proposed etymologies for the term, but the one that seems most likely is actually similar to a popular trend right now. The same way people now use LOL, TLDR, or WTF, people back in the 1800s were using their own acronyms. But the added twist back then was to intentionally misspell the words. So, 'all correct' became 'oll korrect' became 'O.K.' and 'OK'. The 'okay' spelling doesn't appear until around 60 years later.
Different style guides recommend the different spellings, but I definitely prefer 'okay'. It may not be the original spelling, but it just looks better, and with the way the meaning of the term has morphed so much, I don't mind the spelling morphing a bit. And especially with the convention of using all caps to signify shouting, I can't read 'OK' without hearing it in my head as someone shouting the word, instead of just 'okay', which sounds like someone just saying it in a normal voice.
Anyway, not a terribly important subject nor a particularly long post, but there you go.
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