Russian search engine Yandex branches out into data business

MOSCOW (Reuters) - Russian search engine Yandex said on Tuesday it planned to capitalise on its expertise in data analysis to develop its business beyond Russia which could help to drive its expansion as advertising revenue growth slows. Yandex, the market-leading Internet search engine in Russia with a market share of 60 percent, gets the bulk of its revenues from text-based advertising which have been hit by the country's economic downturn. It also offers free email, maps, music streaming