The most popular way to pay for things online, PayPal, would have a run for its money simply because it would be easier and cheaper to do transactions via Facebook.

最流行的在线支付方式，将会出现资金流失，因为通过Facebook完成交易会更方便和更便宜。

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It also had toes suited to walking along the ground and fewer feathers on its tail and lower legs, which would have made it easier to run.

BBC: Eosinopteryx