Description:Black Eyed Peas frontman will.i.am has accused Simon Cowell of failing to develop the talented hopefuls who appear on his TV contests. The hip-hop star insists Cowell lets down his acts by not providing them with career guidance after they compete in shows such as The X Factor.??Will used British singer/rapper Cher Llyod who competed in The X Factor in 2010 but who the hip-hop star claims has not been given the "right material" to record after being signed to Cowell's Syco Music label.(0:56)