Most hotel managers (70%) are familiar with TripAdvisor's POPULARITY INDEX, which ranks the top hotels in a city.

大部分的酒店经理70%都对TripAdvisor的酒店流行指数Popularity Index十分熟悉，这是一项对城市中酒店进行排名的指标。

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90% of hotel managers believe that the POPULARITY INDEX is important to their hotel and follow their ranking regularly.

90%的的经理认识到流行指数对酒店的重要性并定期地关注这个排名。

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With over 45 million reviews to draw from, TripAdvisor's Popularity Index probably provides the most comprehensive ranking system.

旅游评论网站TripAdvisor从4500多万条旅游评论中统计得出的酒店人气指数也许能给出最全面的排名信息。

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Another reason for the popularity of index funds, especially in the institutional market, is that comparison to widely available benchmarks makes performance measurement so easy.

FORBES: Getting Over Index Investing With A Better Way

Financial services firms that rely on brokers and advisors face a threat from online channels which are accumulating assets faster than full service firms, partly because of the growing popularity of passive investments such as index funds and ETFs, he added.

FORBES: Financial Advisors Are Adopting Social Media, Fitfully

However, as index-based mutual funds and ETFs continue to gain popularity and active managers are increasingly pressured to control their performance tracking error relative to benchmark indexes, the markets could become less efficient.

FORBES: Equal-Weight Indexers Didn't Suck Wind For A Decade