FYI, Oxford English Dictionary Adds New Words. LOL!

Among the additions are “OMG” (oh my God), “LOL” (laugh out loud), and “FYI” (for your information). The internet slang terms join others already part of the dictionary, including “BFF” (best friends forever) and “TMI” (too much information). Though you’d think these words are fairly new to the English language as a result of the Internet, Oxford says otherwise:

“OED’s research has revealed some unexpected historical  perspectives: our first quotation for OMG is from a personal letter from 1917; the letters LOL had a previous life, starting in 1960, denoting an elderly woman (or ‘little old lady’; see LOL n./1);