通常来讲，数据将来自文件或数据库，但是我们将跳过这一步，因为这并不重要。

Normally, the data would come from a file or a database, but we'll skip that step because it's not terribly interesting.

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虽然现在许多网络出版商允许用户选择是否在Facebook上公开自己的动态，比如他们读过的文章，或他们购买的鞋子等，但多数用户都会跳过这一步。

Until now, although many web publishers offered users the option to publish their actions — articles they read, shoes they buy — on Facebook, most people took a pass.

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