A Google Web Search Help thread has a couple of searchers who are upset with Google's use of English. Specifically in their marketing and use of "Ok Google" for the hot word to trigger a search. They want Google to spell it either "OK Google" or "Okay Google" but not "Ok Google."
Ok is not a word, OK is.
One searcher said:
It is absolutely outrageous that Google's search application contains one misspelt word.
I am not sure if it is outrageous, I assume there is a reason for this. OK vs Ok is not a huge difference is space, so I am not sure why Google went with the lowercase version?
Does this bother you?
Forum discussion at Google Web Search Help.