WPP CEO: It's a shame Microsoft-Yahoo talks failed

NEW YORK, May 9 (Reuters) - The advertising industry lost a potential balancing influence in the Web search market when deal talks between Microsoft Corp (MSFT.O: Quote, Profile, Research) and Yahoo Inc (YHOO.O: Quote, Profile, Research) broke down, the chief of ad services group WPP (WPP.L: Quote, Profile, Research) said on Friday.

"It was a shame ... that those negotiations failed. Maybe they'll come back again," WPP CEO Martin Sorrell said in an interview with cable