Oil slides on profit-taking; U.S. crude still on to big week

By Barani Krishnan NEW YORK (Reuters) - Oil prices fell on Friday as investors cashed out weekly profits after an earlier rally driven by disruptions to crude supplies and Wall Street's gains from U.S. economic data. Prices turned negative soon after the release of weekly U.S. oil rig data by industry firm Baker Hughes that showed a 10th weekly drop in the rig count, which was positive to oil but traders and investors chose to lock in profits. "I think a good part of the selling was due to cashi