If there's one thing that Twitter is good for it's that it always provides a very public forum for the always-entertaining, generally lowbrow celebrity feud. And what unexpected pair were going at it last night in our favorite online arena? None other than musician M.I.A. and buoy of the black t-shirt industry Anderson Cooper. And what was it regarding? An article that Anderson linked to in 2009 that tied M.I.A. to Sri Lanka's Tamil Tigers.

Images via Getty (Image 1, Image 2)