Overview: 2012/10/15 Headlines: Campaigns Buying Personal Data to Influence Votes; Obama, Romney Prepare for 2nd Presidential Debate; HRW: Syrian Regime Dropping Cluster Bombs on Civilians; U.K. to Begin Afghan Withdrawal in 2013; Study: U.S. Bombings Caused "Staggering Increases" in Iraqi Birth Defects, Miscarriages; Torture in U.S. Custody to Be Raised at Gitmo Hearing for 9/11 Suspects; Pakistani Teenage Activist Flown to U.K. for Medical Treatment; Philippines, Rebels Sign Preliminary Accord for Peace Talks; Colombian Peace Talks Kick Off in Norway; 10 Arrested in Bahrain Protest Crackdown; "Global Noise" Anti-Austerity Protests Held Worldwide; Obama Campaign Office Targeted in Denver; Former Senator Arlen Specter Dies at 82;$