In less time than it takes to buy, sign and mail a Christmas or birthday card to a single person, you can send news or a gift to your entire social graph.

因为你在比为一个人购买、填写和寄出一张圣诞贺卡或生日贺卡更短的时间内，便可以将新闻或礼物发送给社交图中的每一个人。

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The Daily Mail says Clichy's future with Arsenal is in doubt as fears grow that the defender will not sign a new contract.

每日邮报称克里希在阿森纳的未来成疑，担心这名防守球员不签下一份新合同。

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Or in your E-mail inbox, if you sign up for that.

或在您电子邮箱的收件箱中，如果您已经注册电子邮箱。

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Users don't have to play a rousing game of guess-the-username, either, as they just need to sign in with one or more familiar e-mail addresses and a single password.

ENGADGET: Mozilla Persona sign-in launches in beta, skips the social networking ball and chain (video)

It is harder and takes more volition to sign something, photocopy it, put it in an envelope and mail it.

FORBES: Hey IRS, Where's My Tax Package?

Turn off those annoying e-mail alerts--do not have a sign flash up on your screen every time a new e-mail comes in.

FORBES: Magazine Article