Here's one rap battle we didn't quite see coming. It seems that 50 Cent, who in the past could be found in da club with a bottle full of bub, is now dedicating his time to more serious enterprises. Namely, stopping P. Diddy from exploiting the Notorious B.I.G.'s memory. Fiddy recently launched a Twitter petition (Twitition!) imploring fans to give their digital John Hancock in an effort to ban Puffy from using Biggie's legacy to further his own career.