Rar
Born from Jamie's habit of making up words (she practically has her own language) and/or creating weird sounds, she frequently uses "Rar" as a greeting on AOL Instant Messenger. It has since caught on and variations such as "Rawr" or "Roar" are now often used among other members of the community, especially so when in response to Jamie's greeting to them.
This greeting is also, apparently, incredibly irritating to n00bs… much to the amusement of Jamie and Leda.