Which spelling do you use?
Well, technically, OK. (Both capitalized).
Ok unless I'm expanding it to okayyyyyy cuz okkkkkk isn't as appropriate...
Both. Without any particular reason to favor one over the other in different circumstances, as far as I can figure.
Both, sometimes I'm rushed. 😎
Okay okay I admit it!
I use both lately, though I don't know why I started doing that.
I used to use "ok" all the time. But I have a weird compulsion (no, not OCD) to use no abbreviations. Luckily I write fast, so my note-taking doesn't suffer. Anyway, I never thought about it being abbreviated until recently, so now I use "okay."
Kk... Wait a minute, i probably shoulnd add the next one