Used in chat lingo, to show the "Roc Sign", the diamond-shaped hand sign made popular by Jay-Z and others associated with Roc-A-Fella Records and/or Rocawear.
"Welcome to the <>, It ain't never gonna stop
Rudeboys put your lighters up, rudegirls throw your diamonds up" - Jay-Z, On the Rock
"Hey dude, Jay-Z is awesome <> "
"I'm a <> worshiper"