Kudos to Esperanza Spalding...

[DotKritic]

...for pissing off so many Justin Bieber fans. She came away with the upset for "Best New Artist" at the Grammys - beating out Justin Bieber, Mumford & Sons, Florence + the Machine and Drake.

Bieber fans went on an Internet rampage.

Angry "Beliebers" attacked Spalding's Wikipedia page, adding insults, taunts and pro-Bieber messages. After the page listed her as "Best New Artist" winner, one fan wrote, "Justin Bieber deserved it go die in a hole. Who the heck are you anyway?" Another fan wrote "Biber 4 Lyfe." By Monday, the page had been scrubbed clean of insults.

Really? Acting like a bunch of little bitches...