China's internet regulator said on Saturday that search engines should tighten management of paid-for ads in search results, making clear which results are paid-for and limiting their numbers. Chinese regulators last month imposed limits on the number of lucrative healthcare adverts carried by Baidu Inc following the death of a student who underwent an experimental cancer treatment which he found using China's biggest internet search engine. Wei Zexi, 21, died in April of a rare form of cancer, and the case sparked widespread public anger.
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China tightens controls on paid-for internet search ads
