This tiny abbreviation shows up constantly online, especially in casual conversations.

Letter writing has been an art form for many centuries. From "x" and "o" meaning "hugs and kisses," respectively, to the intricacies of deciding what salutation to use in a letter, it may take some ...

"LMK" stands for "let me know." The term is used when you want to ask something and be told someone's answer or decision. USA TODAY Shopping: Shop sales in tech, home ...