Hurry up and read this!
Our time has apparently become so valuable (or we have become so lazy) that we can't even commuinicate in complete sentences. And keeping someone waiting for a few minutes is no longer acceptable.
Of course, shortcuts in spelling out words in their entirety has been around for quite awhile -- Xmas instead of Christmas; BYOB for Bring Your Own Beer, etc. (the military and government long ago created their own artform of acronyms).
The text message world has taken that to a new level with its own language of letters with few vowels or syllables.

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U R 2 Rushed
 by Scott Hettrick
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But I didn't realize how extreme it had become until this weekend when a friend sent me a question by text message to my cell phone. I responded with the answer to which I received this text response:
K
That was it.
"K."
Apparently it's not enough that the word "okay" was long ago abbreviated to an accepted two-letter iteration, "OK."
Now, to save all the extra time and trouble it takes to type that extra letter "O," we have reduced it to simply "K."
This sense of urgency with communication isn't limited to text messages.
Remember when it was perfectly fine to tell someone, "I'll be ready in a few minutes?"
As time went on and we couldn't wait a few minutes for anything, the comment became, "Give me two minutes."
That soon became, "I just need one minute," and later "Hold on for a half-a-minute."
But even that was too much to ask. By the 1990s, I noticed people saying, "I'll get back to you in a few seconds." And then it devolved into "Can you give me two seconds?"
Shortly thereafter we were asking for "Just one second," and then "Give me one sec..."
But even that is clearly asking a lot of people's patience these days because now I'm hearing, "I'll be with you in half-a-second."
Next we'll get no verbal message at all but only eye contact to convey the message. All I can say is that you better not waste my time by blinking.