Their motivation is growth. They need a critical mass of users to make their service more useful so they have to leave their doors open as much as possible.
他们的动机就是用户的增长,他们需要大量的用户使用他们的服务,所以他们会尽可能的敞开大门。
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The personalized news service Veritocracy dropped its beta badge today, opening its doors for everyone to register and try their hand at being a story editor.