Feb 4 (Reuters) - LinkedIn Corp , the operator of the world's biggest networking site for professionals, posted a quarterly loss, compared with year-earlier profit, hurt by higher costs.

LinkedIn reported a net loss of $8.4 million, or 6 cents per share, attributable to the company for the fourth quarter ended Dec. 31 compared with a net income of $3 million, or 2 cents per share, a year earlier.

Revenue jumped about 34 percent to $861.9 million.

(Reporting by Natalie Grover in Bengaluru; Editing by Kirti Pandey) ((SaiSachin.R@thomsonreuters.com; within U.S. +1 646 223 8780, outside U.S. +91 80 6749 7649; Reuters Messaging: saisachin.r.thomsonreuters.com@reuters.net))

Keywords: LNKIN CORP RESULTS/