Cyber "Greek" & "Latin"

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Well, i'm not really good at the abbrevs here. I thought i'm getting by knowing the brb, lol, rofl, lmao, gtg, and all. But gosh, i got a lot of other things i don't understand. And i don't wanna crack my head deciphering, so i'll just ask your help :) Pls post all the abbrevs used here and their meanings (i feel so outdated). i.e. jkjkjk - is this "just kidding, just kidding, just kidding"? How about wkwkwk, etc? Pls help us understand the cyber greek and latin, hehe. Thanks.