 Alex Fletcher of Digital Spy gave " Piece of Me " four stars , calling it " a two fingered @-@ salute to the media hounds and an electro @-@ thudding cry of defiance , warning us that this popstrel is not for turning . [ The opening line ] poops from a great height on anything Lily Allen has ever penned and reveals that it 's been Spears who 's been laughing hardest during her year of zany media antics " . Peter Robinson of The Observer and Margeaux Watson of Entertainment Weekly named " Piece of Me " one of the standout tracks of the album . Dennis Lim of Blender called it one of the best tracks of Blackout along with " Gimme More " . Laura Herbert of BBC News said that the song is " without doubt the best track on the whole album . [ ... ] It 's a masterpiece . " Kelefa Sanneh of The New York Times said " [ Bloodshy & Avant ] evoke the horror , the exhilaration and ( finally ) the boredom of [ Spears ' ] overexamined life . It ’ s brilliant " . 
