Leetspeak, Internet shorthand, computer jargon for instant messaging -- whatever you call them, initialisms like BRB, LOL and BTW have now entered the public lexicon. (I know a few teenagers who actually say LOL to each other in person!)
Maybe we're in such a big hurry that we don't want to type "be right back" or "laughing out loud." Or it could be that these terms communicate more in abbreviated form.
As with any new language, there's always an etymology -- a way to track the first recorded occurrence of a term and find its origins.
To find them for the most common initialisms, I scoured Internet chat forums and checked in with a noted dictionary expert, trying to find the first usages.
BRB (be right back)
According to one entry in the Urban Dictionary, the term BRB became popular on America Online. AOL released its popular chat client in 1997, and it seems likely that was the first time a large number of casual PC users would have a reason to type BRB and then resume the chat.
However, Ben Zimmer, an executive producer at the Visual Thesaurus and a former editor at the American Oxford Dictionary, said that BRB is one of the few terms still in wide use today that was listed on the Jargon File, circa 1990. It states the abbreviation was reported as being used in proprietary commercial networks such as GEnie (General Electric Network for Information Exchange) and CompuServe, which began in 1985 and 1979, respectively, before the World Wide Web became popular.
But wait, he also notes that textfiles.com shows the term in a May 1989 "FidoNews" newsletter.
And he points to even earlier usage by Apple developers on a January 3, 1989, Apple II Development Forum Conference Log on textfiles.com. So it's safe to assume it was used as early as 1988.
GG (great game)
One of the first popular multiplayer games was Marathon on the Mac, and this post-mortem comment after a multiplayer match has become part of the netiquette since then. Marathon came out in 1994, and before that time, multiplayer gaming was a rare luxury for those who actually had a modem. Marathon was also one of the first games to support LAN play. Furthermore, it was such an addictive multiplayer experience that it likely spawned quick post-game comments such as GG and others.