If you ask us, "bling obsession" has long been commercial hip-hop's most shameful component (though we're totally down with the Bling! barbershop quartet). At one time, conspicuous consumption by a historically poor culture might have seemed like powerful social commentary--but now that hip hop is the music industry's cash cow, doesn't a $100,000 necklace just seem completely ridiculous? And is obnoxious ornamentation really worth the cost--not only monetarily, but socially and politically? Next week, as......