Launched earlier this month, Obayoo (pronounced oh-bio) is a private social network for microblogging and file sharing within your company.

这个月早些时候才面世的Obayoo是一款公司专用的微博和文件分享社交网络。

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The firm has announced plans for a Twitter-like private social network, called Toyota Friend, which will be integrated into some electric and hybrid vehicles in Japan next year.

丰田还公布了建立一个类似推特的非公开社交网络“丰田之友”的计划，该网络会应用于明年在日本推出的电动及混合动力车上。

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Facebook made a deal with us that our social network was private.

Facebook跟我们达成了协议让我们的社交网络变成私有网络。

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Although it is a private social network, there are times when you just want to have a one-to-one (or one-to-few) conversation with your friend(s) on Path.

FORBES: Path 3.0 Is Now A Messaging App Too

After flunking Privacy 101 with Buzz, which automatically built a public social network using Gmail users' formerly private contact lists, Google has designed a social network with privacy as its building block.

FORBES: Magazine Article

Angellist has also become a sort of private social network for the tech-savvy seed investing crowd.

FORBES: AngelList Takes Angel Investing To Warp Speed